622540031 has 2 divisors, whose sum is σ = 622540032. Its totient is φ = 622540030.

The previous prime is 622540019. The next prime is 622540033. The reversal of 622540031 is 130045226.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 622540031 - 2²⁶ = 555431167 is a prime.

It is a super-2 number, since 2×622540031² = 775112180394961922, which contains 22 as substring.

Together with 622540033, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 622539979 and 622540006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (622540033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311270015 + 311270016.

It is an arithmetic number, because the mean of its divisors is an integer number (311270016).

Almost surely, 2^622540031 is an apocalyptic number.

622540031 is a deficient number, since it is larger than the sum of its proper divisors (1).

622540031 is an equidigital number, since it uses as much as digits as its factorization.

622540031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 622540031 is about 24950.7521129123. The cubic root of 622540031 is about 853.8647683353.

Adding to 622540031 its reverse (130045226), we get a palindrome (752585257).

The spelling of 622540031 in words is "six hundred twenty-two million, five hundred forty thousand, thirty-one".