61338231 has 12 divisors (see below), whose sum is σ = 88739352. Its totient is φ = 40827696.

The previous prime is 61338203. The next prime is 61338239. The reversal of 61338231 is 13283316.

It is a happy number.

It is not a de Polignac number, because 61338231 - 2¹⁵ = 61305463 is a prime.

It is a super-2 number, since 2×61338231² = 7524757164418722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61338195 and 61338204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61338239) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1060 + ... + 11126.

It is an arithmetic number, because the mean of its divisors is an integer number (7394946).

Almost surely, 2^61338231 is an apocalyptic number.

61338231 is a deficient number, since it is larger than the sum of its proper divisors (27401121).

61338231 is a wasteful number, since it uses less digits than its factorization.

61338231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10750 (or 10747 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 61338231 is about 7831.8727645436. The cubic root of 61338231 is about 394.3759434896.

The spelling of 61338231 in words is "sixty-one million, three hundred thirty-eight thousand, two hundred thirty-one".