49913213131 has 2 divisors, whose sum is σ = 49913213132. Its totient is φ = 49913213130.

The previous prime is 49913213113. The next prime is 49913213191. The reversal of 49913213131 is 13131231994.

Together with previous prime (49913213113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49913213131 - 2⁵ = 49913213099 is a prime.

It is a super-2 number, since 2×49913213131² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (49913213191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24956606565 + 24956606566.

It is an arithmetic number, because the mean of its divisors is an integer number (24956606566).

Almost surely, 2^49913213131 is an apocalyptic number.

49913213131 is a deficient number, since it is larger than the sum of its proper divisors (1).

49913213131 is an equidigital number, since it uses as much as digits as its factorization.

49913213131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17496, while the sum is 37.

The spelling of 49913213131 in words is "forty-nine billion, nine hundred thirteen million, two hundred thirteen thousand, one hundred thirty-one".