1252321155031 has 4 divisors (see below), whose sum is σ = 1252324459864. Its totient is φ = 1252317850200.

The previous prime is 1252321155023. The next prime is 1252321155037. The reversal of 1252321155031 is 1305511232521.

It is a happy number.

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 1252321155031 - 2³ = 1252321155023 is a prime.

It is a super-2 number, since 2×1252321155031² (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 = 1252321154984 and 1252321155002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252321155037) 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, 997485 + ... + 1870726.

It is an arithmetic number, because the mean of its divisors is an integer number (313081114966).

Almost surely, 2^{1252321155031} is an apocalyptic number.

1252321155031 is a deficient number, since it is larger than the sum of its proper divisors (3304833).

1252321155031 is an equidigital number, since it uses as much as digits as its factorization.

1252321155031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3304832.

The product of its (nonzero) digits is 9000, while the sum is 31.

Adding to 1252321155031 its reverse (1305511232521), we get a palindrome (2557832387552).

The spelling of 1252321155031 in words is "one trillion, two hundred fifty-two billion, three hundred twenty-one million, one hundred fifty-five thousand, thirty-one".