30961162840 has 16 divisors (see below), whose sum is σ = 69662616480. Its totient is φ = 12384465120.

The previous prime is 30961162831. The next prime is 30961162847. The reversal of 30961162840 is 4826116903.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 774029071 = 30961162840 / (3 + 0 + 9 + 6 + 1 + 1 + 6 + 2 + 8 + 4 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 30961162793 and 30961162802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30961162847) 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, 387014496 + ... + 387014575.

It is an arithmetic number, because the mean of its divisors is an integer number (4353913530).

Almost surely, 2^30961162840 is an apocalyptic number.

It is an amenable number.

30961162840 is an abundant number, since it is smaller than the sum of its proper divisors (38701453640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30961162840 is a wasteful number, since it uses less digits than its factorization.

30961162840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774029082 (or 774029078 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The spelling of 30961162840 in words is "thirty billion, nine hundred sixty-one million, one hundred sixty-two thousand, eight hundred forty".