61315312 has 10 divisors (see below), whose sum is σ = 118798448. Its totient is φ = 30657648.

The previous prime is 61315301. The next prime is 61315313. The reversal of 61315312 is 21351316.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61315313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1916088 + ... + 1916119.

Almost surely, 2^61315312 is an apocalyptic number.

It is an amenable number.

61315312 is a deficient number, since it is larger than the sum of its proper divisors (57483136).

61315312 is a wasteful number, since it uses less digits than its factorization.

61315312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3832215 (or 3832209 counting only the distinct ones).

The product of its digits is 540, while the sum is 22.

The square root of 61315312 is about 7830.4094401251. The cubic root of 61315312 is about 394.3268179111.

Adding to 61315312 its reverse (21351316), we get a palindrome (82666628).

The spelling of 61315312 in words is "sixty-one million, three hundred fifteen thousand, three hundred twelve".