61457031 has 12 divisors (see below), whose sum is σ = 89318008. Its totient is φ = 40719024.

The previous prime is 61457029. The next prime is 61457041. The reversal of 61457031 is 13075416.

61457031 is a `hidden beast` number, since 61 + 4 + 570 + 31 = 666.

61457031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61457031 - 2¹ = 61457029 is a prime.

It is a super-2 number, since 2×61457031² = 7553933318669922, 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 = 61456986 and 61457004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61457041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19480 + ... + 22413.

Almost surely, 2^61457031 is an apocalyptic number.

61457031 is a deficient number, since it is larger than the sum of its proper divisors (27860977).

61457031 is a wasteful number, since it uses less digits than its factorization.

61457031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42062 (or 42059 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 61457031 is about 7839.4534886049. The cubic root of 61457031 is about 394.6303886442.

The spelling of 61457031 in words is "sixty-one million, four hundred fifty-seven thousand, thirty-one".