31920893834 has 8 divisors (see below), whose sum is σ = 48555726048. Its totient is φ = 15735651820.

The previous prime is 31920893819. The next prime is 31920893839. The reversal of 31920893834 is 43839802913.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×31920893834² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31920893839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112397372 + ... + 112397655.

It is an arithmetic number, because the mean of its divisors is an integer number (6069465756).

Almost surely, 2^31920893834 is an apocalyptic number.

31920893834 is a deficient number, since it is larger than the sum of its proper divisors (16634832214).

31920893834 is a wasteful number, since it uses less digits than its factorization.

31920893834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224795100.

The product of its (nonzero) digits is 1119744, while the sum is 50.

The spelling of 31920893834 in words is "thirty-one billion, nine hundred twenty million, eight hundred ninety-three thousand, eight hundred thirty-four".