61231233 has 24 divisors (see below), whose sum is σ = 96403872. Its totient is φ = 34461504.

The previous prime is 61231223. The next prime is 61231237. The reversal of 61231233 is 33213216.

It is not a de Polignac number, because 61231233 - 2⁵ = 61231201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (61231237) 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, 6741 + ... + 12957.

It is an arithmetic number, because the mean of its divisors is an integer number (4016828).

Almost surely, 2^61231233 is an apocalyptic number.

It is an amenable number.

61231233 is a deficient number, since it is larger than the sum of its proper divisors (35172639).

61231233 is a wasteful number, since it uses less digits than its factorization.

61231233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6301 (or 6294 counting only the distinct ones).

The product of its digits is 648, while the sum is 21.

The square root of 61231233 is about 7825.0388497438. The cubic root of 61231233 is about 394.1464944351.

Adding to 61231233 its reverse (33213216), we get a palindrome (94444449).

The spelling of 61231233 in words is "sixty-one million, two hundred thirty-one thousand, two hundred thirty-three".