1351324231531 has 4 divisors (see below), whose sum is σ = 1351458448000. Its totient is φ = 1351190015064.

The previous prime is 1351324231507. The next prime is 1351324231553.

1351324231531 is nontrivially palindromic in base 10.

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 1351324231531 - 2⁷ = 1351324231403 is a prime.

It is a super-2 number, since 2×1351324231531² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1351324231571) 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, 67093131 + ... + 67113268.

It is an arithmetic number, because the mean of its divisors is an integer number (337864612000).

Almost surely, 2^{1351324231531} is an apocalyptic number.

1351324231531 is a deficient number, since it is larger than the sum of its proper divisors (134216469).

1351324231531 is a wasteful number, since it uses less digits than its factorization.

1351324231531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134216468.

The product of its digits is 32400, while the sum is 34.

The spelling of 1351324231531 in words is "one trillion, three hundred fifty-one billion, three hundred twenty-four million, two hundred thirty-one thousand, five hundred thirty-one".