2197939031 has 4 divisors (see below), whose sum is σ = 2210218200. Its totient is φ = 2185659864.

The previous prime is 2197939021. The next prime is 2197939123. The reversal of 2197939031 is 1309397912.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2197939031 is a prime.

It is a super-2 number, since 2×2197939031² = 9661871967986437922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2197939021) 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, 6139316 + ... + 6139673.

It is an arithmetic number, because the mean of its divisors is an integer number (552554550).

Almost surely, 2^2197939031 is an apocalyptic number.

2197939031 is a deficient number, since it is larger than the sum of its proper divisors (12279169).

2197939031 is a wasteful number, since it uses less digits than its factorization.

2197939031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12279168.

The product of its (nonzero) digits is 91854, while the sum is 44.

The square root of 2197939031 is about 46882.1824470662. The cubic root of 2197939031 is about 1300.1851868336.

The spelling of 2197939031 in words is "two billion, one hundred ninety-seven million, nine hundred thirty-nine thousand, thirty-one".