122877631 has 2 divisors, whose sum is σ = 122877632. Its totient is φ = 122877630.

The previous prime is 122877613. The next prime is 122877637. The reversal of 122877631 is 136778221.

Together with previous prime (122877613) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (136778221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122877631 - 2²¹ = 120780479 is a prime.

It is a super-2 number, since 2×122877631² = 30197824400344322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122877637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61438815 + 61438816.

It is an arithmetic number, because the mean of its divisors is an integer number (61438816).

Almost surely, 2^122877631 is an apocalyptic number.

122877631 is a deficient number, since it is larger than the sum of its proper divisors (1).

122877631 is an equidigital number, since it uses as much as digits as its factorization.

122877631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28224, while the sum is 37.

The square root of 122877631 is about 11085.0183130205. The cubic root of 122877631 is about 497.1540060389.

The spelling of 122877631 in words is "one hundred twenty-two million, eight hundred seventy-seven thousand, six hundred thirty-one".