1232161631 has 8 divisors (see below), whose sum is σ = 1253314128. Its totient is φ = 1211040000.

The previous prime is 1232161621. The next prime is 1232161639. The reversal of 1232161631 is 1361612321.

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 1232161631 - 2¹⁰ = 1232160607 is a prime.

It is a super-2 number, since 2×1232161631² = 3036444569817160322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1232161631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232161639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81551 + ... + 95471.

It is an arithmetic number, because the mean of its divisors is an integer number (156664266).

Almost surely, 2^1232161631 is an apocalyptic number.

1232161631 is a deficient number, since it is larger than the sum of its proper divisors (21152497).

1232161631 is a wasteful number, since it uses less digits than its factorization.

1232161631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15433.

The product of its digits is 1296, while the sum is 26.

The square root of 1232161631 is about 35102.1599192984. The cubic root of 1232161631 is about 1072.0685610783.

Adding to 1232161631 its reverse (1361612321), we get a palindrome (2593773952).

The spelling of 1232161631 in words is "one billion, two hundred thirty-two million, one hundred sixty-one thousand, six hundred thirty-one".