1312501031231 has 8 divisors (see below), whose sum is σ = 1420565479200. Its totient is φ = 1205451273312.

The previous prime is 1312501031209. The next prime is 1312501031239. The reversal of 1312501031231 is 1321301052131.

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

It is not a de Polignac number, because 1312501031231 - 2²² = 1312496836927 is a prime.

It is a super-2 number, since 2×1312501031231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1312501031197 and 1312501031206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312501031239) 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, 253669820 + ... + 253674993.

It is an arithmetic number, because the mean of its divisors is an integer number (177570684900).

Almost surely, 2^{1312501031231} is an apocalyptic number.

1312501031231 is a deficient number, since it is larger than the sum of its proper divisors (108064447969).

1312501031231 is a wasteful number, since it uses less digits than its factorization.

1312501031231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507345025.

The product of its (nonzero) digits is 540, while the sum is 23.

Adding to 1312501031231 its reverse (1321301052131), we get a palindrome (2633802083362).

The spelling of 1312501031231 in words is "one trillion, three hundred twelve billion, five hundred one million, thirty-one thousand, two hundred thirty-one".