61373131 has 8 divisors (see below), whose sum is σ = 64548864. Its totient is φ = 58239720.

The previous prime is 61373113. The next prime is 61373141. The reversal of 61373131 is 13137316.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61373131 - 2⁷ = 61373003 is a prime.

It is a super-2 number, since 2×61373131² = 7533322417486322, 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 = 61373096 and 61373105.

It is not an unprimeable number, because it can be changed into a prime (61373101) 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, 7585 + ... + 13426.

It is an arithmetic number, because the mean of its divisors is an integer number (8068608).

Almost surely, 2^61373131 is an apocalyptic number.

61373131 is a deficient number, since it is larger than the sum of its proper divisors (3175733).

61373131 is a wasteful number, since it uses less digits than its factorization.

61373131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21161.

The product of its digits is 1134, while the sum is 25.

The square root of 61373131 is about 7834.1005227148. The cubic root of 61373131 is about 394.4507261639.

It can be divided in two parts, 61373 and 131, that added together give a square (61504 = 248²).

The spelling of 61373131 in words is "sixty-one million, three hundred seventy-three thousand, one hundred thirty-one".