1215125240431 has 8 divisors (see below), whose sum is σ = 1254354697728. Its totient is φ = 1175897775000.

The previous prime is 1215125240401. The next prime is 1215125240443. The reversal of 1215125240431 is 1340425215121.

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 1215125240431 - 2²⁵ = 1215091685999 is a prime.

It is a super-2 number, since 2×1215125240431² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1215125240393 and 1215125240402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215125240401) 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, 795156 + ... + 1750006.

It is an arithmetic number, because the mean of its divisors is an integer number (156794337216).

Almost surely, 2^{1215125240431} is an apocalyptic number.

1215125240431 is a deficient number, since it is larger than the sum of its proper divisors (39229457297).

1215125240431 is an equidigital number, since it uses as much as digits as its factorization.

1215125240431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995933.

The product of its (nonzero) digits is 9600, while the sum is 31.

The spelling of 1215125240431 in words is "one trillion, two hundred fifteen billion, one hundred twenty-five million, two hundred forty thousand, four hundred thirty-one".