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1231442113030 = 25313972393913
BaseRepresentation
bin10001111010110111101…
…010110111001000000110
311100201120022120221112021
4101322313222313020012
5130133443140104110
62341414450113354
7154653166153033
oct21726752671006
94321508527467
101231442113030
11435284a72a78
1217a7b357b85a
138c180684b0c
14438602c838a
15220752272da
hex11eb7ab7206

1231442113030 has 16 divisors (see below), whose sum is σ = 2288098894464. Its totient is φ = 476687269440.

The previous prime is 1231442113009. The next prime is 1231442113073. The reversal of 1231442113030 is 303112441321.

It is a junction number, because it is equal to n+sod(n) for n = 1231442112986 and 1231442113004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1986196647 + ... + 1986197266.

It is an arithmetic number, because the mean of its divisors is an integer number (143006180904).

Almost surely, 21231442113030 is an apocalyptic number.

1231442113030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231442113030 is a deficient number, since it is larger than the sum of its proper divisors (1056656781434).

1231442113030 is a wasteful number, since it uses less digits than its factorization.

1231442113030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3972393951.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 1231442113030 its reverse (303112441321), we get a palindrome (1534554554351).

The spelling of 1231442113030 in words is "one trillion, two hundred thirty-one billion, four hundred forty-two million, one hundred thirteen thousand, thirty".

Divisors: 1 2 5 10 31 62 155 310 3972393913 7944787826 19861969565 39723939130 123144211303 246288422606 615721056515 1231442113030