61036731 has 24 divisors (see below), whose sum is σ = 101097984. Its totient is φ = 34760880.

The previous prime is 61036709. The next prime is 61036747. The reversal of 61036731 is 13763016.

It is not a de Polignac number, because 61036731 - 2¹⁴ = 61020347 is a prime.

It is a super-2 number, since 2×61036731² = 7450965062332722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61036695 and 61036704.

It is not an unprimeable number, because it can be changed into a prime (61036751) 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, 19390 + ... + 22316.

It is an arithmetic number, because the mean of its divisors is an integer number (4212416).

Almost surely, 2^61036731 is an apocalyptic number.

61036731 is a deficient number, since it is larger than the sum of its proper divisors (40061253).

61036731 is a wasteful number, since it uses less digits than its factorization.

61036731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3271 (or 3268 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 61036731 is about 7812.6007833499. The cubic root of 61036731 is about 393.7287141932.

Adding to 61036731 its reverse (13763016), we get a palindrome (74799747).

The spelling of 61036731 in words is "sixty-one million, thirty-six thousand, seven hundred thirty-one".