421038691231 has 4 divisors (see below), whose sum is σ = 421056497512. Its totient is φ = 421020884952.

The previous prime is 421038691217. The next prime is 421038691259. The reversal of 421038691231 is 132196830124.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 421038691231 - 2⁷ = 421038691103 is a prime.

It is a super-2 number, since 2×421038691231² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421038691291) 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, 8867625 + ... + 8914978.

It is an arithmetic number, because the mean of its divisors is an integer number (105264124378).

Almost surely, 2^421038691231 is an apocalyptic number.

421038691231 is a deficient number, since it is larger than the sum of its proper divisors (17806281).

421038691231 is a wasteful number, since it uses less digits than its factorization.

421038691231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17806280.

The product of its (nonzero) digits is 62208, while the sum is 40.

The spelling of 421038691231 in words is "four hundred twenty-one billion, thirty-eight million, six hundred ninety-one thousand, two hundred thirty-one".