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1023023001031 = 3517290879443
BaseRepresentation
bin11101110001100001110…
…11000010110111000111
310121210121020021001112221
432320300323002313013
5113230122342013111
62101545325153211
7133624315014013
oct16706073026707
93553536231487
101023023001031
113649528a5379
121463283bb807
137561704c085
143772c001543
151b927abb371
hexee30ec2dc7

1023023001031 has 4 divisors (see below), whose sum is σ = 1023313883992. Its totient is φ = 1022732118072.

The previous prime is 1023023001019. The next prime is 1023023001037. The reversal of 1023023001031 is 1301003203201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1023023001031 - 229 = 1022486130119 is a prime.

It is a super-2 number, since 2×10230230010312 (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1023023000996 and 1023023001014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023023001037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145436205 + ... + 145443238.

It is an arithmetic number, because the mean of its divisors is an integer number (255828470998).

Almost surely, 21023023001031 is an apocalyptic number.

1023023001031 is a deficient number, since it is larger than the sum of its proper divisors (290882961).

1023023001031 is an equidigital number, since it uses as much as digits as its factorization.

1023023001031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290882960.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 1023023001031 its reverse (1301003203201), we get a palindrome (2324026204232).

The spelling of 1023023001031 in words is "one trillion, twenty-three billion, twenty-three million, one thousand, thirty-one".

Divisors: 1 3517 290879443 1023023001031