47397631 has 2 divisors, whose sum is σ = 47397632. Its totient is φ = 47397630.

The previous prime is 47397619. The next prime is 47397643. The reversal of 47397631 is 13679374.

It is a balanced prime because it is at equal distance from previous prime (47397619) and next prime (47397643).

It is a cyclic number.

It is not a de Polignac number, because 47397631 - 2¹¹ = 47395583 is a prime.

It is a super-2 number, since 2×47397631² = 4493070848824322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47397601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23698815 + 23698816.

It is an arithmetic number, because the mean of its divisors is an integer number (23698816).

Almost surely, 2^47397631 is an apocalyptic number.

47397631 is a deficient number, since it is larger than the sum of its proper divisors (1).

47397631 is an equidigital number, since it uses as much as digits as its factorization.

47397631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 95256, while the sum is 40.

The square root of 47397631 is about 6884.5937425530. The cubic root of 47397631 is about 361.8974684947.

The spelling of 47397631 in words is "forty-seven million, three hundred ninety-seven thousand, six hundred thirty-one".