1250000131 has 4 divisors (see below), whose sum is σ = 1250357472. Its totient is φ = 1249642792.

The previous prime is 1250000111. The next prime is 1250000149. The reversal of 1250000131 is 1310000521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1310000521 = 1471 ⋅890551.

It is a cyclic number.

It is not a de Polignac number, because 1250000131 - 2¹⁵ = 1249967363 is a prime.

It is a super-2 number, since 2×1250000131² = 3125000655000034322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1250000111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173371 + ... + 180436.

It is an arithmetic number, because the mean of its divisors is an integer number (312589368).

Almost surely, 2^1250000131 is an apocalyptic number.

1250000131 is a deficient number, since it is larger than the sum of its proper divisors (357341).

1250000131 is an equidigital number, since it uses as much as digits as its factorization.

1250000131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357340.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 1250000131 is about 35355.3409119471. The cubic root of 1250000131 is about 1077.2173826467.

Adding to 1250000131 its reverse (1310000521), we get a palindrome (2560000652).

The spelling of 1250000131 in words is "one billion, two hundred fifty million, one hundred thirty-one", and thus it is an aban number.