61131002 has 4 divisors (see below), whose sum is σ = 91696506. Its totient is φ = 30565500.

The previous prime is 61130989. The next prime is 61131011. The reversal of 61131002 is 20013116.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 47210641 + 13920361 = 6871^2 + 3731^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15282749 + ... + 15282752.

Almost surely, 2^61131002 is an apocalyptic number.

61131002 is a deficient number, since it is larger than the sum of its proper divisors (30565504).

61131002 is a wasteful number, since it uses less digits than its factorization.

61131002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30565503.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 61131002 is about 7818.6317217273. The cubic root of 61131002 is about 393.9313140937.

Adding to 61131002 its reverse (20013116), we get a palindrome (81144118).

It can be divided in two parts, 611 and 31002, that added together give a palindrome (31613).

The spelling of 61131002 in words is "sixty-one million, one hundred thirty-one thousand, two".