61732631 has 2 divisors, whose sum is σ = 61732632. Its totient is φ = 61732630.

The previous prime is 61732603. The next prime is 61732633. The reversal of 61732631 is 13623716.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61732631 is a prime.

It is a super-2 number, since 2×61732631² = 7621835460364322, which contains 22 as substring.

Together with 61732633, 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 = 61732594 and 61732603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61732633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30866315 + 30866316.

It is an arithmetic number, because the mean of its divisors is an integer number (30866316).

Almost surely, 2^61732631 is an apocalyptic number.

61732631 is a deficient number, since it is larger than the sum of its proper divisors (1).

61732631 is an equidigital number, since it uses as much as digits as its factorization.

61732631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 29.

The square root of 61732631 is about 7857.0115820202. The cubic root of 61732631 is about 395.2194070271.

The spelling of 61732631 in words is "sixty-one million, seven hundred thirty-two thousand, six hundred thirty-one".