31920148733 has 16 divisors (see below), whose sum is σ = 35682558912. Its totient is φ = 28301616000.

The previous prime is 31920148717. The next prime is 31920148739. The reversal of 31920148733 is 33784102913.

It is a cyclic number.

It is not a de Polignac number, because 31920148733 - 2⁴ = 31920148717 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31920148739) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1714010 + ... + 1732532.

It is an arithmetic number, because the mean of its divisors is an integer number (2230159932).

Almost surely, 2^31920148733 is an apocalyptic number.

It is an amenable number.

31920148733 is a deficient number, since it is larger than the sum of its proper divisors (3762410179).

31920148733 is a wasteful number, since it uses less digits than its factorization.

31920148733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22396.

The product of its (nonzero) digits is 108864, while the sum is 41.

The spelling of 31920148733 in words is "thirty-one billion, nine hundred twenty million, one hundred forty-eight thousand, seven hundred thirty-three".