31431042430 has 16 divisors (see below), whose sum is σ = 56582056224. Its totient is φ = 12571043680.

The previous prime is 31431042427. The next prime is 31431042481. The reversal of 31431042430 is 3424013413.

It is a junction number, because it is equal to n+sod(n) for n = 31431042395 and 31431042404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72826 + ... + 261085.

It is an arithmetic number, because the mean of its divisors is an integer number (3536378514).

Almost surely, 2^31431042430 is an apocalyptic number.

31431042430 is a deficient number, since it is larger than the sum of its proper divisors (25151013794).

31431042430 is a wasteful number, since it uses less digits than its factorization.

31431042430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343331.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 31431042430 its reverse (3424013413), we get a palindrome (34855055843).

The spelling of 31431042430 in words is "thirty-one billion, four hundred thirty-one million, forty-two thousand, four hundred thirty".