61016031 has 8 divisors (see below), whose sum is σ = 90394160. Its totient is φ = 40677336.

The previous prime is 61016027. The next prime is 61016041. The reversal of 61016031 is 13061016.

61016031 is a `hidden beast` number, since 61 + 0 + 1 + 603 + 1 = 666.

It is not a de Polignac number, because 61016031 - 2² = 61016027 is a prime.

It is a super-2 number, since 2×61016031² = 7445912077985922, 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 = 61015995 and 61016013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61016041) 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, 1129900 + ... + 1129953.

It is an arithmetic number, because the mean of its divisors is an integer number (11299270).

Almost surely, 2^61016031 is an apocalyptic number.

61016031 is a deficient number, since it is larger than the sum of its proper divisors (29378129).

61016031 is a wasteful number, since it uses less digits than its factorization.

61016031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2259862 (or 2259856 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 61016031 is about 7811.2758880992. The cubic root of 61016031 is about 393.6841994354.

Adding to 61016031 its reverse (13061016), we get a palindrome (74077047).

It can be divided in two parts, 610 and 16031, that added together give a square (16641 = 129²).

The spelling of 61016031 in words is "sixty-one million, sixteen thousand, thirty-one".