431421187026 has 32 divisors (see below), whose sum is σ = 865230841728. Its totient is φ = 143409519360.

The previous prime is 431421187019. The next prime is 431421187039. The reversal of 431421187026 is 620781124134.

431421187026 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×431421187026² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3196266 + ... + 3328506.

It is an arithmetic number, because the mean of its divisors is an integer number (27038463804).

Almost surely, 2^431421187026 is an apocalyptic number.

431421187026 is an abundant number, since it is smaller than the sum of its proper divisors (433809654702).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

431421187026 is a wasteful number, since it uses less digits than its factorization.

431421187026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133746.

The product of its (nonzero) digits is 64512, while the sum is 39.

The spelling of 431421187026 in words is "four hundred thirty-one billion, four hundred twenty-one million, one hundred eighty-seven thousand, twenty-six".