412121631 has 4 divisors (see below), whose sum is σ = 549495512. Its totient is φ = 274747752.

The previous prime is 412121557. The next prime is 412121663. The reversal of 412121631 is 136121214.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 412121631 - 2¹⁴ = 412105247 is a prime.

It is a super-2 number, since 2×412121631² = 339688477476200322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 412121598 and 412121607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (412171631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68686936 + ... + 68686941.

It is an arithmetic number, because the mean of its divisors is an integer number (137373878).

Almost surely, 2^412121631 is an apocalyptic number.

412121631 is a deficient number, since it is larger than the sum of its proper divisors (137373881).

412121631 is a wasteful number, since it uses less digits than its factorization.

412121631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137373880.

The product of its digits is 288, while the sum is 21.

The square root of 412121631 is about 20300.7790737203. The cubic root of 412121631 is about 744.1751036720.

Adding to 412121631 its reverse (136121214), we get a palindrome (548242845).

It can be divided in two parts, 4121 and 21631, that added together give a palindrome (25752).

The spelling of 412121631 in words is "four hundred twelve million, one hundred twenty-one thousand, six hundred thirty-one".