431401890345 has 48 divisors (see below), whose sum is σ = 740494433088. Its totient is φ = 214402585600.

The previous prime is 431401890319. The next prime is 431401890349. The reversal of 431401890345 is 543098104134.

It is not a de Polignac number, because 431401890345 - 2¹⁶ = 431401824809 is a prime.

It is a super-2 number, since 2×431401890345² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 431401890297 and 431401890306.

It is not an unprimeable number, because it can be changed into a prime (431401890349) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 54819 + ... + 930488.

It is an arithmetic number, because the mean of its divisors is an integer number (15426967356).

Almost surely, 2^431401890345 is an apocalyptic number.

It is an amenable number.

431401890345 is a deficient number, since it is larger than the sum of its proper divisors (309092542743).

431401890345 is a wasteful number, since it uses less digits than its factorization.

431401890345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985450 (or 985433 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

Adding to 431401890345 its reverse (543098104134), we get a palindrome (974499994479).

The spelling of 431401890345 in words is "four hundred thirty-one billion, four hundred one million, eight hundred ninety thousand, three hundred forty-five".