21311003092 has 12 divisors (see below), whose sum is σ = 37307608660. Its totient is φ = 10651686336.

The previous prime is 21311003069. The next prime is 21311003093. The reversal of 21311003092 is 29030011312.

It can be written as a sum of positive squares in 2 ways, for example, as 15216702736 + 6094300356 = 123356^2 + 78066^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21311003093) 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, 941217 + ... + 963592.

Almost surely, 2^21311003092 is an apocalyptic number.

It is an amenable number.

21311003092 is a deficient number, since it is larger than the sum of its proper divisors (15996605568).

21311003092 is a wasteful number, since it uses less digits than its factorization.

21311003092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1907610 (or 1907608 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 22.

The spelling of 21311003092 in words is "twenty-one billion, three hundred eleven million, three thousand, ninety-two".