31070099 has 2 divisors, whose sum is σ = 31070100. Its totient is φ = 31070098.

The previous prime is 31070089. The next prime is 31070119. The reversal of 31070099 is 99007013.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31070099 - 2¹⁶ = 31004563 is a prime.

It is not a weakly prime, because it can be changed into another prime (31070009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15535049 + 15535050.

It is an arithmetic number, because the mean of its divisors is an integer number (15535050).

Almost surely, 2^31070099 is an apocalyptic number.

31070099 is a deficient number, since it is larger than the sum of its proper divisors (1).

31070099 is an equidigital number, since it uses as much as digits as its factorization.

31070099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1701, while the sum is 29.

The square root of 31070099 is about 5574.0558841834. The cubic root of 31070099 is about 314.3746693988.

The spelling of 31070099 in words is "thirty-one million, seventy thousand, ninety-nine".