70319131 has 2 divisors, whose sum is σ = 70319132. Its totient is φ = 70319130.

The previous prime is 70319111. The next prime is 70319143. The reversal of 70319131 is 13191307.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70319131 is a prime.

It is a super-2 number, since 2×70319131² = 9889560369190322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 70319096 and 70319105.

It is not a weakly prime, because it can be changed into another prime (70319101) 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 as a sum of consecutive naturals, namely, 35159565 + 35159566.

It is an arithmetic number, because the mean of its divisors is an integer number (35159566).

Almost surely, 2^70319131 is an apocalyptic number.

70319131 is a deficient number, since it is larger than the sum of its proper divisors (1).

70319131 is an equidigital number, since it uses as much as digits as its factorization.

70319131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 567, while the sum is 25.

The square root of 70319131 is about 8385.6503027493. The cubic root of 70319131 is about 412.7538805660.

The spelling of 70319131 in words is "seventy million, three hundred nineteen thousand, one hundred thirty-one".