131111121332 has 6 divisors (see below), whose sum is σ = 229444462338. Its totient is φ = 65555560664.

The previous prime is 131111121329. The next prime is 131111121347. The reversal of 131111121332 is 233121111131.

It can be written as a sum of positive squares in only one way, i.e., 124267530256 + 6843591076 = 352516^2 + 82726^2 .

It is a super-2 number, since 2×131111121332² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16388890163 + ... + 16388890170.

It is an arithmetic number, because the mean of its divisors is an integer number (38240743723).

Almost surely, 2^131111121332 is an apocalyptic number.

It is an amenable number.

131111121332 is a deficient number, since it is larger than the sum of its proper divisors (98333341006).

131111121332 is a wasteful number, since it uses less digits than its factorization.

131111121332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32777780337 (or 32777780335 counting only the distinct ones).

The product of its digits is 108, while the sum is 20.

Adding to 131111121332 its reverse (233121111131), we get a palindrome (364232232463).

The spelling of 131111121332 in words is "one hundred thirty-one billion, one hundred eleven million, one hundred twenty-one thousand, three hundred thirty-two".