61217230031 has 8 divisors (see below), whose sum is σ = 63991127520. Its totient is φ = 58452689152.

The previous prime is 61217230013. The next prime is 61217230037. The reversal of 61217230031 is 13003271216.

61217230031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61217230031 is a prime.

It is a super-2 number, since 2×61217230031² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61217230037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2325770 + ... + 2351943.

It is an arithmetic number, because the mean of its divisors is an integer number (7998890940).

Almost surely, 2^61217230031 is an apocalyptic number.

61217230031 is a deficient number, since it is larger than the sum of its proper divisors (2773897489).

61217230031 is a wasteful number, since it uses less digits than its factorization.

61217230031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4678305.

The product of its (nonzero) digits is 1512, while the sum is 26.

The spelling of 61217230031 in words is "sixty-one billion, two hundred seventeen million, two hundred thirty thousand, thirty-one".