131222031331 has 8 divisors (see below), whose sum is σ = 132226921424. Its totient is φ = 130219578720.

The previous prime is 131222031313. The next prime is 131222031337. The reversal of 131222031331 is 133130222131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131222031331 - 2⁷ = 131222031203 is a prime.

It is a super-2 number, since 2×131222031331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131222031337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 501216 + ... + 716701.

It is an arithmetic number, because the mean of its divisors is an integer number (16528365178).

Almost surely, 2^131222031331 is an apocalyptic number.

131222031331 is a deficient number, since it is larger than the sum of its proper divisors (1004890093).

131222031331 is a wasteful number, since it uses less digits than its factorization.

131222031331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218741.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 131222031331 its reverse (133130222131), we get a palindrome (264352253462).

The spelling of 131222031331 in words is "one hundred thirty-one billion, two hundred twenty-two million, thirty-one thousand, three hundred thirty-one".