85340631031 has 2 divisors, whose sum is σ = 85340631032. Its totient is φ = 85340631030.

The previous prime is 85340630993. The next prime is 85340631133. The reversal of 85340631031 is 13013604358.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85340631031 - 2⁹ = 85340630519 is a prime.

It is a super-2 number, since 2×85340631031² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85340331031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42670315515 + 42670315516.

It is an arithmetic number, because the mean of its divisors is an integer number (42670315516).

Almost surely, 2^85340631031 is an apocalyptic number.

85340631031 is a deficient number, since it is larger than the sum of its proper divisors (1).

85340631031 is an equidigital number, since it uses as much as digits as its factorization.

85340631031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 85340631031 in words is "eighty-five billion, three hundred forty million, six hundred thirty-one thousand, thirty-one".