31432144655 has 16 divisors (see below), whose sum is σ = 39393535680. Its totient is φ = 24031020288.

The previous prime is 31432144621. The next prime is 31432144661. The reversal of 31432144655 is 55644123413.

It is a cyclic number.

It is not a de Polignac number, because 31432144655 - 2²⁴ = 31415367439 is a prime.

It is a super-2 number, since 2×31432144655² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8789 + ... + 250881.

It is an arithmetic number, because the mean of its divisors is an integer number (2462095980).

Almost surely, 2^31432144655 is an apocalyptic number.

31432144655 is a deficient number, since it is larger than the sum of its proper divisors (7961391025).

31432144655 is a wasteful number, since it uses less digits than its factorization.

31432144655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243250.

The product of its digits is 172800, while the sum is 38.

The spelling of 31432144655 in words is "thirty-one billion, four hundred thirty-two million, one hundred forty-four thousand, six hundred fifty-five".