30991480425 has 72 divisors (see below), whose sum is σ = 57354186240. Its totient is φ = 15980428800.

The previous prime is 30991480417. The next prime is 30991480427. The reversal of 30991480425 is 52408419903.

It is not a de Polignac number, because 30991480425 - 2³ = 30991480417 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (30991480427) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 14555761 + ... + 14557889.

It is an arithmetic number, because the mean of its divisors is an integer number (796585920).

Almost surely, 2^30991480425 is an apocalyptic number.

It is an amenable number.

30991480425 is a deficient number, since it is larger than the sum of its proper divisors (26362705815).

30991480425 is a wasteful number, since it uses less digits than its factorization.

30991480425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4263 (or 4255 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

It can be divided in two parts, 3099 and 1480425, that added together give a square (1483524 = 1218²).

The spelling of 30991480425 in words is "thirty billion, nine hundred ninety-one million, four hundred eighty thousand, four hundred twenty-five".