622945031 has 4 divisors (see below), whose sum is σ = 643040064. Its totient is φ = 602850000.

The previous prime is 622945019. The next prime is 622945049. The reversal of 622945031 is 130549226.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130549226 = 2 ⋅65274613.

It is a cyclic number.

It is not a de Polignac number, because 622945031 - 2⁶ = 622944967 is a prime.

It is a super-2 number, since 2×622945031² = 776121023295181922, which 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 (622944031) 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, 10047470 + ... + 10047531.

It is an arithmetic number, because the mean of its divisors is an integer number (160760016).

Almost surely, 2^622945031 is an apocalyptic number.

622945031 is a deficient number, since it is larger than the sum of its proper divisors (20095033).

622945031 is a wasteful number, since it uses less digits than its factorization.

622945031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20095032.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 622945031 is about 24958.8667811662. The cubic root of 622945031 is about 854.0498917811.

The spelling of 622945031 in words is "six hundred twenty-two million, nine hundred forty-five thousand, thirty-one".