431401703640 has 64 divisors (see below), whose sum is σ = 1294367592960. Its totient is φ = 115026011520.

The previous prime is 431401703639. The next prime is 431401703669. The reversal of 431401703640 is 46307104134.

It is a super-2 number, since 2×431401703640² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

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, 751707 + ... + 1194933.

It is an arithmetic number, because the mean of its divisors is an integer number (20224493640).

Almost surely, 2^431401703640 is an apocalyptic number.

431401703640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

431401703640 is an abundant number, since it is smaller than the sum of its proper divisors (862965889320).

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

431401703640 is a wasteful number, since it uses less digits than its factorization.

431401703640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451352 (or 451348 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

Adding to 431401703640 its reverse (46307104134), we get a palindrome (477708807774).

The spelling of 431401703640 in words is "four hundred thirty-one billion, four hundred one million, seven hundred three thousand, six hundred forty".