61996031 has 4 divisors (see below), whose sum is σ = 65259000. Its totient is φ = 58733064.

The previous prime is 61996027. The next prime is 61996043. The reversal of 61996031 is 13069916.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61996031 - 2² = 61996027 is a prime.

It is a super-2 number, since 2×61996031² = 7687015719505922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61995982 and 61996000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61990031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1631456 + ... + 1631493.

It is an arithmetic number, because the mean of its divisors is an integer number (16314750).

Almost surely, 2^61996031 is an apocalyptic number.

61996031 is a deficient number, since it is larger than the sum of its proper divisors (3262969).

61996031 is a wasteful number, since it uses less digits than its factorization.

61996031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3262968.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 61996031 is about 7873.7558382261. The cubic root of 61996031 is about 395.7807151578.

The spelling of 61996031 in words is "sixty-one million, nine hundred ninety-six thousand, thirty-one".