20976362931 has 4 divisors (see below), whose sum is σ = 27968483912. Its totient is φ = 13984241952.

The previous prime is 20976362903. The next prime is 20976362933. The reversal of 20976362931 is 13926367902.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20976362931 - 2²² = 20972168627 is a prime.

It is a super-2 number, since 2×20976362931² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20976362933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3496060486 + ... + 3496060491.

It is an arithmetic number, because the mean of its divisors is an integer number (6992120978).

Almost surely, 2^20976362931 is an apocalyptic number.

20976362931 is a deficient number, since it is larger than the sum of its proper divisors (6992120981).

20976362931 is an equidigital number, since it uses as much as digits as its factorization.

20976362931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6992120980.

The product of its (nonzero) digits is 734832, while the sum is 48.

The spelling of 20976362931 in words is "twenty billion, nine hundred seventy-six million, three hundred sixty-two thousand, nine hundred thirty-one".