161316311310 has 96 divisors (see below), whose sum is σ = 522916273152. Its totient is φ = 33520271040.

The previous prime is 161316311279. The next prime is 161316311327. The reversal of 161316311310 is 13113613161.

161316311310 is a `hidden beast` number, since 1 + 6 + 1 + 3 + 1 + 631 + 13 + 10 = 666.

It is a super-2 number, since 2×161316311310² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11632054 + ... + 11645913.

It is an arithmetic number, because the mean of its divisors is an integer number (5447044512).

Almost surely, 2^161316311310 is an apocalyptic number.

161316311310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161316311310 is an abundant number, since it is smaller than the sum of its proper divisors (361599961842).

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

161316311310 is a wasteful number, since it uses less digits than its factorization.

161316311310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23277998 (or 23277995 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

Adding to 161316311310 its reverse (13113613161), we get a palindrome (174429924471).

The spelling of 161316311310 in words is "one hundred sixty-one billion, three hundred sixteen million, three hundred eleven thousand, three hundred ten".