213190031 has 2 divisors, whose sum is σ = 213190032. Its totient is φ = 213190030.

The previous prime is 213190027. The next prime is 213190039. The reversal of 213190031 is 130091312.

213190031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213190031 - 2² = 213190027 is a prime.

It is a super-2 number, since 2×213190031² = 90899978635561922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213189985 and 213190012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213190039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106595015 + 106595016.

It is an arithmetic number, because the mean of its divisors is an integer number (106595016).

Almost surely, 2^213190031 is an apocalyptic number.

213190031 is a deficient number, since it is larger than the sum of its proper divisors (1).

213190031 is an equidigital number, since it uses as much as digits as its factorization.

213190031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 213190031 is about 14601.0284226831. The cubic root of 213190031 is about 597.3868121234.

The spelling of 213190031 in words is "two hundred thirteen million, one hundred ninety thousand, thirty-one".