422157031 has 16 divisors (see below), whose sum is σ = 446796000. Its totient is φ = 398256768.

The previous prime is 422157011. The next prime is 422157059. The reversal of 422157031 is 130751224.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-422157031 is a prime.

It is a super-2 number, since 2×422157031² = 356433117645469922, 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 = 422156987 and 422157005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422157011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 536020 + ... + 536806.

It is an arithmetic number, because the mean of its divisors is an integer number (27924750).

Almost surely, 2^422157031 is an apocalyptic number.

422157031 is a deficient number, since it is larger than the sum of its proper divisors (24638969).

422157031 is a wasteful number, since it uses less digits than its factorization.

422157031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1218.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 422157031 is about 20546.4603034197. The cubic root of 422157031 is about 750.1670922523.

The spelling of 422157031 in words is "four hundred twenty-two million, one hundred fifty-seven thousand, thirty-one".