47131031 has 2 divisors, whose sum is σ = 47131032. Its totient is φ = 47131030.

The previous prime is 47131027. The next prime is 47131033. The reversal of 47131031 is 13013174.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47131031 - 2² = 47131027 is a prime.

It is a super-2 number, since 2×47131031² = 4442668166245922, which contains 22 as substring.

Together with 47131033, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 47130994 and 47131012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47131033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23565515 + 23565516.

It is an arithmetic number, because the mean of its divisors is an integer number (23565516).

Almost surely, 2^47131031 is an apocalyptic number.

47131031 is a deficient number, since it is larger than the sum of its proper divisors (1).

47131031 is an equidigital number, since it uses as much as digits as its factorization.

47131031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 47131031 is about 6865.2043669508. The cubic root of 47131031 is about 361.2176642792.

The spelling of 47131031 in words is "forty-seven million, one hundred thirty-one thousand, thirty-one".