61380431 has 8 divisors (see below), whose sum is σ = 73841280. Its totient is φ = 49842648.

The previous prime is 61380419. The next prime is 61380433. The reversal of 61380431 is 13408316.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61380431 - 2⁶ = 61380367 is a prime.

It is a super-2 number, since 2×61380431² = 7535114619491522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61380431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61380433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230621 + ... + 230886.

It is an arithmetic number, because the mean of its divisors is an integer number (9230160).

Almost surely, 2^61380431 is an apocalyptic number.

61380431 is a deficient number, since it is larger than the sum of its proper divisors (12460849).

61380431 is a wasteful number, since it uses less digits than its factorization.

61380431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461533.

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

The square root of 61380431 is about 7834.5664206770. The cubic root of 61380431 is about 394.4663647997.

Adding to 61380431 its reverse (13408316), we get a palindrome (74788747).

The spelling of 61380431 in words is "sixty-one million, three hundred eighty thousand, four hundred thirty-one".