61337131 has 4 divisors (see below), whose sum is σ = 61495200. Its totient is φ = 61179064.

The previous prime is 61337069. The next prime is 61337153. The reversal of 61337131 is 13173316.

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

It is a cyclic number.

It is not a de Polignac number, because 61337131 - 2²¹ = 59239979 is a prime.

It is a super-2 number, since 2×61337131² = 7524487278622322, 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 = 61337096 and 61337105.

It is not an unprimeable number, because it can be changed into a prime (61337431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78451 + ... + 79228.

It is an arithmetic number, because the mean of its divisors is an integer number (15373800).

Almost surely, 2^61337131 is an apocalyptic number.

61337131 is a deficient number, since it is larger than the sum of its proper divisors (158069).

61337131 is a wasteful number, since it uses less digits than its factorization.

61337131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158068.

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

The square root of 61337131 is about 7831.8025383688. The cubic root of 61337131 is about 394.3735859815.

The spelling of 61337131 in words is "sixty-one million, three hundred thirty-seven thousand, one hundred thirty-one".