123131344351 has 2 divisors, whose sum is σ = 123131344352. Its totient is φ = 123131344350.

The previous prime is 123131344291. The next prime is 123131344409. The reversal of 123131344351 is 153443131321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123131344351 - 2³¹ = 120983860703 is a prime.

It is a super-2 number, since 2×123131344351² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123131344751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61565672175 + 61565672176.

It is an arithmetic number, because the mean of its divisors is an integer number (61565672176).

Almost surely, 2^123131344351 is an apocalyptic number.

123131344351 is a deficient number, since it is larger than the sum of its proper divisors (1).

123131344351 is an equidigital number, since it uses as much as digits as its factorization.

123131344351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 31.

Adding to 123131344351 its reverse (153443131321), we get a palindrome (276574475672).

The spelling of 123131344351 in words is "one hundred twenty-three billion, one hundred thirty-one million, three hundred forty-four thousand, three hundred fifty-one".