3123521961 has 8 divisors (see below), whose sum is σ = 4759652544. Its totient is φ = 1784869680.

The previous prime is 3123521917. The next prime is 3123521971. The reversal of 3123521961 is 1691253213.

3123521961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3123521961 - 2⁹ = 3123521449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3123521971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74369550 + ... + 74369591.

It is an arithmetic number, because the mean of its divisors is an integer number (594956568).

Almost surely, 2^3123521961 is an apocalyptic number.

It is an amenable number.

3123521961 is a deficient number, since it is larger than the sum of its proper divisors (1636130583).

3123521961 is a wasteful number, since it uses less digits than its factorization.

3123521961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148739151.

The product of its digits is 9720, while the sum is 33.

The square root of 3123521961 is about 55888.4778912434. The cubic root of 3123521961 is about 1461.7783361038.

The spelling of 3123521961 in words is "three billion, one hundred twenty-three million, five hundred twenty-one thousand, nine hundred sixty-one".