61312238 has 32 divisors (see below), whose sum is σ = 102253536. Its totient is φ = 27393408.

The previous prime is 61312201. The next prime is 61312243. The reversal of 61312238 is 83221316.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193256 + ... + 193572.

It is an arithmetic number, because the mean of its divisors is an integer number (3195423).

Almost surely, 2^61312238 is an apocalyptic number.

61312238 is a deficient number, since it is larger than the sum of its proper divisors (40941298).

61312238 is a wasteful number, since it uses less digits than its factorization.

61312238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548.

The product of its digits is 1728, while the sum is 26.

The square root of 61312238 is about 7830.2131516326. The cubic root of 61312238 is about 394.3202280352.

The spelling of 61312238 in words is "sixty-one million, three hundred twelve thousand, two hundred thirty-eight".