1345242131251 has 16 divisors (see below), whose sum is σ = 1380169929600. Its totient is φ = 1310766755328.

The previous prime is 1345242131239. The next prime is 1345242131287. The reversal of 1345242131251 is 1521312425431.

It is a cyclic number.

It is not a de Polignac number, because 1345242131251 - 2¹³ = 1345242123059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1345242131231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3034771 + ... + 3449683.

It is an arithmetic number, because the mean of its divisors is an integer number (86260620600).

Almost surely, 2^{1345242131251} is an apocalyptic number.

1345242131251 is a deficient number, since it is larger than the sum of its proper divisors (34927798349).

1345242131251 is a wasteful number, since it uses less digits than its factorization.

1345242131251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415458.

The product of its digits is 28800, while the sum is 34.

Adding to 1345242131251 its reverse (1521312425431), we get a palindrome (2866554556682).

The spelling of 1345242131251 in words is "one trillion, three hundred forty-five billion, two hundred forty-two million, one hundred thirty-one thousand, two hundred fifty-one".