122143531 has 2 divisors, whose sum is σ = 122143532. Its totient is φ = 122143530.

The previous prime is 122143519. The next prime is 122143543. The reversal of 122143531 is 135341221.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (122143519) and next prime (122143543).

It is a cyclic number.

It is not a de Polignac number, because 122143531 - 2⁵ = 122143499 is a prime.

It is a super-2 number, since 2×122143531² = 29838084330295922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (122143591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61071765 + 61071766.

It is an arithmetic number, because the mean of its divisors is an integer number (61071766).

Almost surely, 2^122143531 is an apocalyptic number.

122143531 is a deficient number, since it is larger than the sum of its proper divisors (1).

122143531 is an equidigital number, since it uses as much as digits as its factorization.

122143531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 22.

The square root of 122143531 is about 11051.8564503888. The cubic root of 122143531 is about 496.1619893961.

Adding to 122143531 its reverse (135341221), we get a palindrome (257484752).

The spelling of 122143531 in words is "one hundred twenty-two million, one hundred forty-three thousand, five hundred thirty-one".