421553031 has 8 divisors (see below), whose sum is σ = 567227760. Its totient is φ = 278456832.

The previous prime is 421553023. The next prime is 421553071. The reversal of 421553031 is 130355124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 421553031 - 2³ = 421553023 is a prime.

It is a super-2 number, since 2×421553031² = 355413915890573922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 421552992 and 421553010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421553071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 644250 + ... + 644903.

It is an arithmetic number, because the mean of its divisors is an integer number (70903470).

Almost surely, 2^421553031 is an apocalyptic number.

421553031 is a deficient number, since it is larger than the sum of its proper divisors (145674729).

421553031 is a wasteful number, since it uses less digits than its factorization.

421553031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289265.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 421553031 is about 20531.7566467168. The cubic root of 421553031 is about 749.8091549973.

The spelling of 421553031 in words is "four hundred twenty-one million, five hundred fifty-three thousand, thirty-one".