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1223407031 = 71115888403
BaseRepresentation
bin100100011101011…
…1011010110110111
310011021001111221112
41020322323112313
510001143011111
6321221505235
742213534230
oct11072732667
93137044845
101223407031
115786438a0
122a187221b
131665cb5b2
14b86a4087
1572610e8b
hex48ebb5b7

1223407031 has 8 divisors (see below), whose sum is σ = 1525286784. Its totient is φ = 953304120.

The previous prime is 1223407027. The next prime is 1223407037. The reversal of 1223407031 is 1307043221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1223407031 - 22 = 1223407027 is a prime.

It is a super-2 number, since 2×12234070312 = 2993449527000469922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1223406988 and 1223407006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223407037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7944125 + ... + 7944278.

It is an arithmetic number, because the mean of its divisors is an integer number (190660848).

Almost surely, 21223407031 is an apocalyptic number.

1223407031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1223407031 is a deficient number, since it is larger than the sum of its proper divisors (301879753).

1223407031 is a wasteful number, since it uses less digits than its factorization.

1223407031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15888421.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 1223407031 is about 34977.2358970803. The cubic root of 1223407031 is about 1069.5234815891.

The spelling of 1223407031 in words is "one billion, two hundred twenty-three million, four hundred seven thousand, thirty-one".

Divisors: 1 7 11 77 15888403 111218821 174772433 1223407031