49319531 has 2 divisors, whose sum is σ = 49319532. Its totient is φ = 49319530.

The previous prime is 49319527. The next prime is 49319539. The reversal of 49319531 is 13591394.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49319531 - 2² = 49319527 is a prime.

It is a super-2 number, since 2×49319531² = 4864832276119922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 49319491 and 49319500.

It is not a weakly prime, because it can be changed into another prime (49319539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24659765 + 24659766.

It is an arithmetic number, because the mean of its divisors is an integer number (24659766).

Almost surely, 2^49319531 is an apocalyptic number.

49319531 is a deficient number, since it is larger than the sum of its proper divisors (1).

49319531 is an equidigital number, since it uses as much as digits as its factorization.

49319531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14580, while the sum is 35.

The square root of 49319531 is about 7022.7865552073. The cubic root of 49319531 is about 366.7242643219.

The spelling of 49319531 in words is "forty-nine million, three hundred nineteen thousand, five hundred thirty-one".