311402134121 has 24 divisors (see below), whose sum is σ = 341886798792. Its totient is φ = 281949292800.

The previous prime is 311402134049. The next prime is 311402134259. The reversal of 311402134121 is 121431204113.

It can be written as a sum of positive squares in 4 ways, for example, as 48913957225 + 262488176896 = 221165^2 + 512336^2 .

It is not a de Polignac number, because 311402134121 - 2²² = 311397939817 is a prime.

It is a super-2 number, since 2×311402134121² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311402134721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12897941 + ... + 12922061.

It is an arithmetic number, because the mean of its divisors is an integer number (14245283283).

Almost surely, 2^311402134121 is an apocalyptic number.

It is an amenable number.

311402134121 is a deficient number, since it is larger than the sum of its proper divisors (30484664671).

311402134121 is a wasteful number, since it uses less digits than its factorization.

311402134121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24473 (or 24402 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 311402134121 its reverse (121431204113), we get a palindrome (432833338234).

The spelling of 311402134121 in words is "three hundred eleven billion, four hundred two million, one hundred thirty-four thousand, one hundred twenty-one".