105431520412 has 6 divisors (see below), whose sum is σ = 184505160728. Its totient is φ = 52715760204.

The previous prime is 105431520371. The next prime is 105431520413. The reversal of 105431520412 is 214025134501.

It is a super-2 number, since 2×105431520412² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105431520413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13178940048 + ... + 13178940055.

Almost surely, 2^105431520412 is an apocalyptic number.

It is an amenable number.

105431520412 is a deficient number, since it is larger than the sum of its proper divisors (79073640316).

105431520412 is a wasteful number, since it uses less digits than its factorization.

105431520412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26357880107 (or 26357880105 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 105431520412 its reverse (214025134501), we get a palindrome (319456654913).

The spelling of 105431520412 in words is "one hundred five billion, four hundred thirty-one million, five hundred twenty thousand, four hundred twelve".