421697631307 has 8 divisors (see below), whose sum is σ = 435345871232. Its totient is φ = 408052209600.

The previous prime is 421697631259. The next prime is 421697631353. The reversal of 421697631307 is 703136796124.

It is a happy number.

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 421697631307 - 2³⁵ = 387337892939 is a prime.

It is a super-3 number, since 3×421697631307³ (a number of 36 digits) contains 333 as substring.

It is the 649383-rd Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421697631367) by changing a digit.

It is a nontrivial repunit in base 649382.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 398328 + ... + 1001029.

It is an arithmetic number, because the mean of its divisors is an integer number (54418233904).

Almost surely, 2^421697631307 is an apocalyptic number.

421697631307 is a deficient number, since it is larger than the sum of its proper divisors (13648239925).

421697631307 is a wasteful number, since it uses less digits than its factorization.

421697631307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1409109.

The product of its (nonzero) digits is 1143072, while the sum is 49.

The spelling of 421697631307 in words is "four hundred twenty-one billion, six hundred ninety-seven million, six hundred thirty-one thousand, three hundred seven".