351131343151231 has 4 divisors (see below), whose sum is σ = 351132031142464. Its totient is φ = 351130655160000.

The previous prime is 351131343151229. The next prime is 351131343151243. The reversal of 351131343151231 is 132151343131153.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 351131343151231 - 2¹ = 351131343151229 is a prime.

It is a super-2 number, since 2×351131343151231² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (351131343151201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 343229490 + ... + 344250991.

It is an arithmetic number, because the mean of its divisors is an integer number (87783007785616).

Almost surely, 2^{351131343151231} is an apocalyptic number.

351131343151231 is a deficient number, since it is larger than the sum of its proper divisors (687991233).

351131343151231 is an equidigital number, since it uses as much as digits as its factorization.

351131343151231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687991232.

The product of its digits is 48600, while the sum is 37.

Adding to 351131343151231 its reverse (132151343131153), we get a palindrome (483282686282384).

The spelling of 351131343151231 in words is "three hundred fifty-one trillion, one hundred thirty-one billion, three hundred forty-three million, one hundred fifty-one thousand, two hundred thirty-one".