61431296 has 20 divisors (see below), whose sum is σ = 122743632. Its totient is φ = 30715392.

The previous prime is 61431289. The next prime is 61431299. The reversal of 61431296 is 69213416.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61431299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59480 + ... + 60503.

Almost surely, 2^61431296 is an apocalyptic number.

It is an amenable number.

61431296 is a deficient number, since it is larger than the sum of its proper divisors (61312336).

61431296 is an equidigital number, since it uses as much as digits as its factorization.

61431296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120001 (or 119985 counting only the distinct ones).

The product of its digits is 7776, while the sum is 32.

The square root of 61431296 is about 7837.8119395658. The cubic root of 61431296 is about 394.5752974105.

The spelling of 61431296 in words is "sixty-one million, four hundred thirty-one thousand, two hundred ninety-six".