31936444151 has 2 divisors, whose sum is σ = 31936444152. Its totient is φ = 31936444150.

The previous prime is 31936444093. The next prime is 31936444153. The reversal of 31936444151 is 15144463913.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31936444151 is a prime.

It is a super-2 number, since 2×31936444151² (a number of 22 digits) contains 22 as substring.

Together with 31936444153, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 31936444099 and 31936444108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31936444153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15968222075 + 15968222076.

It is an arithmetic number, because the mean of its divisors is an integer number (15968222076).

Almost surely, 2^31936444151 is an apocalyptic number.

31936444151 is a deficient number, since it is larger than the sum of its proper divisors (1).

31936444151 is an equidigital number, since it uses as much as digits as its factorization.

31936444151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 41.

The spelling of 31936444151 in words is "thirty-one billion, nine hundred thirty-six million, four hundred forty-four thousand, one hundred fifty-one".