61363831 has 2 divisors, whose sum is σ = 61363832. Its totient is φ = 61363830.

The previous prime is 61363823. The next prime is 61363843. The reversal of 61363831 is 13836316.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61363831 - 2³ = 61363823 is a prime.

It is a super-2 number, since 2×61363831² = 7531039509993122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61363793 and 61363802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61363891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30681915 + 30681916.

It is an arithmetic number, because the mean of its divisors is an integer number (30681916).

Almost surely, 2^61363831 is an apocalyptic number.

61363831 is a deficient number, since it is larger than the sum of its proper divisors (1).

61363831 is an equidigital number, since it uses as much as digits as its factorization.

61363831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 31.

The square root of 61363831 is about 7833.5069413386. The cubic root of 61363831 is about 394.4308011739.

The spelling of 61363831 in words is "sixty-one million, three hundred sixty-three thousand, eight hundred thirty-one".