61382331 has 24 divisors (see below), whose sum is σ = 97393920. Its totient is φ = 37079856.

The previous prime is 61382327. The next prime is 61382339. The reversal of 61382331 is 13328316.

It is a happy number.

It is not a de Polignac number, because 61382331 - 2² = 61382327 is a prime.

It is a super-2 number, since 2×61382331² = 7535581117987122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61382295 and 61382304.

It is not an unprimeable number, because it can be changed into a prime (61382339) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3871 + ... + 11736.

It is an arithmetic number, because the mean of its divisors is an integer number (4058080).

Almost surely, 2^61382331 is an apocalyptic number.

61382331 is a deficient number, since it is larger than the sum of its proper divisors (36011589).

61382331 is a wasteful number, since it uses less digits than its factorization.

61382331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15655 (or 15652 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 61382331 is about 7834.6876772466. The cubic root of 61382331 is about 394.4704349262.

It can be divided in two parts, 613 and 82331, that added together give a square (82944 = 288²).

The spelling of 61382331 in words is "sixty-one million, three hundred eighty-two thousand, three hundred thirty-one".