311160139 has 2 divisors, whose sum is σ = 311160140. Its totient is φ = 311160138.

The previous prime is 311160133. The next prime is 311160167. The reversal of 311160139 is 931061113.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 311160139 - 2⁹ = 311159627 is a prime.

It is not a weakly prime, because it can be changed into another prime (311160133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155580069 + 155580070.

It is an arithmetic number, because the mean of its divisors is an integer number (155580070).

Almost surely, 2^311160139 is an apocalyptic number.

311160139 is a deficient number, since it is larger than the sum of its proper divisors (1).

311160139 is an equidigital number, since it uses as much as digits as its factorization.

311160139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 311160139 is about 17639.7318290273. The cubic root of 311160139 is about 677.6331634601.

The spelling of 311160139 in words is "three hundred eleven million, one hundred sixty thousand, one hundred thirty-nine".