61323911 has 16 divisors (see below), whose sum is σ = 71705088. Its totient is φ = 51876000.

The previous prime is 61323901. The next prime is 61323919. The reversal of 61323911 is 11932316.

It is a de Polignac number, because none of the positive numbers 2^k-61323911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61323919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6086 + ... + 12636.

It is an arithmetic number, because the mean of its divisors is an integer number (4481568).

Almost surely, 2^61323911 is an apocalyptic number.

61323911 is a deficient number, since it is larger than the sum of its proper divisors (10381177).

61323911 is a wasteful number, since it uses less digits than its factorization.

61323911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6622.

The product of its digits is 972, while the sum is 26.

The square root of 61323911 is about 7830.9584981661. The cubic root of 61323911 is about 394.3452508152.

The spelling of 61323911 in words is "sixty-one million, three hundred twenty-three thousand, nine hundred eleven".