61358431 has 8 divisors (see below), whose sum is σ = 62278400. Its totient is φ = 60442200.

The previous prime is 61358419. The next prime is 61358441. The reversal of 61358431 is 13485316.

61358431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 61358431 - 2¹³ = 61350239 is a prime.

It is a super-2 number, since 2×61358431² = 7529714109563522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61358393 and 61358402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61358441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57856 + ... + 58906.

It is an arithmetic number, because the mean of its divisors is an integer number (7784800).

Almost surely, 2^61358431 is an apocalyptic number.

61358431 is a deficient number, since it is larger than the sum of its proper divisors (919969).

61358431 is a wasteful number, since it uses less digits than its factorization.

61358431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1869.

The product of its digits is 8640, while the sum is 31.

The square root of 61358431 is about 7833.1622605433. The cubic root of 61358431 is about 394.4192309010.

The spelling of 61358431 in words is "sixty-one million, three hundred fifty-eight thousand, four hundred thirty-one".