30912692473 has 4 divisors (see below), whose sum is σ = 33290591908. Its totient is φ = 28534793040.

The previous prime is 30912692413. The next prime is 30912692479. The reversal of 30912692473 is 37429621903.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12582781929 + 18329910544 = 112173^2 + 135388^2 .

It is not a de Polignac number, because 30912692473 - 2³³ = 22322757881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30912692479) 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, 1188949698 + ... + 1188949723.

It is an arithmetic number, because the mean of its divisors is an integer number (8322647977).

Almost surely, 2^30912692473 is an apocalyptic number.

It is an amenable number.

30912692473 is a deficient number, since it is larger than the sum of its proper divisors (2377899435).

30912692473 is a wasteful number, since it uses less digits than its factorization.

30912692473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2377899434.

The product of its (nonzero) digits is 489888, while the sum is 46.

The spelling of 30912692473 in words is "thirty billion, nine hundred twelve million, six hundred ninety-two thousand, four hundred seventy-three".