123481631 has 32 divisors (see below), whose sum is σ = 156710400. Its totient is φ = 94711680.

The previous prime is 123481613. The next prime is 123481663. The reversal of 123481631 is 136184321.

It is not a de Polignac number, because 123481631 - 2¹⁰ = 123480607 is a prime.

It is a super-2 number, since 2×123481631² = 30495426388840322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123481594 and 123481603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123481031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 585116 + ... + 585326.

It is an arithmetic number, because the mean of its divisors is an integer number (4897200).

Almost surely, 2^123481631 is an apocalyptic number.

123481631 is a deficient number, since it is larger than the sum of its proper divisors (33228769).

123481631 is a wasteful number, since it uses less digits than its factorization.

123481631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399.

The product of its digits is 3456, while the sum is 29.

The square root of 123481631 is about 11112.2288943308. The cubic root of 123481631 is about 497.9672550955.

The spelling of 123481631 in words is "one hundred twenty-three million, four hundred eighty-one thousand, six hundred thirty-one".