122031731 has 2 divisors, whose sum is σ = 122031732. Its totient is φ = 122031730.

The previous prime is 122031709. The next prime is 122031733. The reversal of 122031731 is 137130221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122031731 - 2¹⁰ = 122030707 is a prime.

It is a super-2 number, since 2×122031731² = 29783486741712722, which contains 22 as substring.

Together with 122031733, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (122031733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61015865 + 61015866.

It is an arithmetic number, because the mean of its divisors is an integer number (61015866).

Almost surely, 2^122031731 is an apocalyptic number.

122031731 is a deficient number, since it is larger than the sum of its proper divisors (1).

122031731 is an equidigital number, since it uses as much as digits as its factorization.

122031731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 122031731 is about 11046.7973186802. The cubic root of 122031731 is about 496.0105614188.

Adding to 122031731 its reverse (137130221), we get a palindrome (259161952).

The spelling of 122031731 in words is "one hundred twenty-two million, thirty-one thousand, seven hundred thirty-one".