31009284157 has 8 divisors (see below), whose sum is σ = 31853606400. Its totient is φ = 30165290064.

The previous prime is 31009284127. The next prime is 31009284167. The reversal of 31009284157 is 75148290013.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31009284157 - 2⁷ = 31009284029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31009284127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115944 + ... + 274702.

It is an arithmetic number, because the mean of its divisors is an integer number (3981700800).

Almost surely, 2^31009284157 is an apocalyptic number.

31009284157 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

31009284157 is a deficient number, since it is larger than the sum of its proper divisors (844322243).

31009284157 is a wasteful number, since it uses less digits than its factorization.

31009284157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164075.

The product of its (nonzero) digits is 60480, while the sum is 40.

The spelling of 31009284157 in words is "thirty-one billion, nine million, two hundred eighty-four thousand, one hundred fifty-seven".