122747431 has 2 divisors, whose sum is σ = 122747432. Its totient is φ = 122747430.

The previous prime is 122747419. The next prime is 122747437. The reversal of 122747431 is 134747221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122747431 - 2¹¹ = 122745383 is a prime.

It is a super-2 number, since 2×122747431² = 30133863634199522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 122747393 and 122747402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122747437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61373715 + 61373716.

It is an arithmetic number, because the mean of its divisors is an integer number (61373716).

Almost surely, 2^122747431 is an apocalyptic number.

122747431 is a deficient number, since it is larger than the sum of its proper divisors (1).

122747431 is an equidigital number, since it uses as much as digits as its factorization.

122747431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9408, while the sum is 31.

The square root of 122747431 is about 11079.1439651265. The cubic root of 122747431 is about 496.9783507230.

The spelling of 122747431 in words is "one hundred twenty-two million, seven hundred forty-seven thousand, four hundred thirty-one".