45423431 has 2 divisors, whose sum is σ = 45423432. Its totient is φ = 45423430.

The previous prime is 45423419. The next prime is 45423527. The reversal of 45423431 is 13432454.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45423431 is a prime.

It is a super-2 number, since 2×45423431² = 4126576167623522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 45423431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45423331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22711715 + 22711716.

It is an arithmetic number, because the mean of its divisors is an integer number (22711716).

Almost surely, 2^45423431 is an apocalyptic number.

45423431 is a deficient number, since it is larger than the sum of its proper divisors (1).

45423431 is an equidigital number, since it uses as much as digits as its factorization.

45423431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 26.

The square root of 45423431 is about 6739.6907199070. The cubic root of 45423431 is about 356.8014782351.

Adding to 45423431 its reverse (13432454), we get a palindrome (58855885).

It can be divided in two parts, 45423 and 431, that added together give a palindrome (45854).

The spelling of 45423431 in words is "forty-five million, four hundred twenty-three thousand, four hundred thirty-one".