431000521542 has 24 divisors (see below), whose sum is σ = 933847934760. Its totient is φ = 143664768000.

The previous prime is 431000521519. The next prime is 431000521547. The reversal of 431000521542 is 245125000134.

It is a super-2 number, since 2×431000521542² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431000521547) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1603309 + ... + 1852727.

It is an arithmetic number, because the mean of its divisors is an integer number (38910330615).

Almost surely, 2^431000521542 is an apocalyptic number.

431000521542 is an abundant number, since it is smaller than the sum of its proper divisors (502847413218).

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

431000521542 is a wasteful number, since it uses less digits than its factorization.

431000521542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345428 (or 345425 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 431000521542 its reverse (245125000134), we get a palindrome (676125521676).

The spelling of 431000521542 in words is "four hundred thirty-one billion, five hundred twenty-one thousand, five hundred forty-two".