2061215931 has 16 divisors (see below), whose sum is σ = 2907488000. Its totient is φ = 1295271648.

The previous prime is 2061215921. The next prime is 2061215993. The reversal of 2061215931 is 1395121602.

It is not a de Polignac number, because 2061215931 - 2¹⁸ = 2060953787 is a prime.

It is a super-2 number, since 2×2061215931² = 8497222228416393522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2061215911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79516 + ... + 102201.

It is an arithmetic number, because the mean of its divisors is an integer number (181718000).

Almost surely, 2^2061215931 is an apocalyptic number.

2061215931 is a deficient number, since it is larger than the sum of its proper divisors (846272069).

2061215931 is a wasteful number, since it uses less digits than its factorization.

2061215931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181938.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 2061215931 is about 45400.6159759975. The cubic root of 2061215931 is about 1272.6466250940.

The spelling of 2061215931 in words is "two billion, sixty-one million, two hundred fifteen thousand, nine hundred thirty-one".