31394097 has 24 divisors (see below), whose sum is σ = 52116480. Its totient is φ = 17838720.

The previous prime is 31394063. The next prime is 31394119. The reversal of 31394097 is 79049313.

It is not a de Polignac number, because 31394097 - 2¹² = 31390001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31394017) 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 in 23 ways as a sum of consecutive naturals, for example, 10729 + ... + 13337.

It is an arithmetic number, because the mean of its divisors is an integer number (2171520).

Almost surely, 2^31394097 is an apocalyptic number.

It is an amenable number.

31394097 is a deficient number, since it is larger than the sum of its proper divisors (20722383).

31394097 is a wasteful number, since it uses less digits than its factorization.

31394097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2813 (or 2810 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 31394097 is about 5603.0435479300. The cubic root of 31394097 is about 315.4636558237.

The spelling of 31394097 in words is "thirty-one million, three hundred ninety-four thousand, ninety-seven".