31289161146 has 8 divisors (see below), whose sum is σ = 62578322304. Its totient is φ = 10429720380.

The previous prime is 31289161133. The next prime is 31289161159. The reversal of 31289161146 is 64116198213.

It is an interprime number because it is at equal distance from previous prime (31289161133) and next prime (31289161159).

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

31289161146 is an admirable number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 31289161098 and 31289161107.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2607430090 + ... + 2607430101.

It is an arithmetic number, because the mean of its divisors is an integer number (7822290288).

Almost surely, 2^31289161146 is an apocalyptic number.

31289161146 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31289161146 is a wasteful number, since it uses less digits than its factorization.

31289161146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5214860196.

The product of its digits is 62208, while the sum is 42.

The spelling of 31289161146 in words is "thirty-one billion, two hundred eighty-nine million, one hundred sixty-one thousand, one hundred forty-six".