13043400231 has 32 divisors (see below), whose sum is σ = 18449625600. Its totient is φ = 8173733760.

The previous prime is 13043400199. The next prime is 13043400281. The reversal of 13043400231 is 13200434031.

It is not a de Polignac number, because 13043400231 - 2⁵ = 13043400199 is a prime.

It is a super-2 number, since 2×13043400231² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13043400198 and 13043400207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13043400281) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7814265 + ... + 7815933.

It is an arithmetic number, because the mean of its divisors is an integer number (576550800).

Almost surely, 2^13043400231 is an apocalyptic number.

13043400231 is a deficient number, since it is larger than the sum of its proper divisors (5406225369).

13043400231 is a wasteful number, since it uses less digits than its factorization.

13043400231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2679.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 13043400231 its reverse (13200434031), we get a palindrome (26243834262).

The spelling of 13043400231 in words is "thirteen billion, forty-three million, four hundred thousand, two hundred thirty-one".