31250140129 has 8 divisors (see below), whose sum is σ = 35633644200. Its totient is φ = 27149442816.

The previous prime is 31250140127. The next prime is 31250140177. The reversal of 31250140129 is 92104105213.

It can be written as a sum of positive squares in 4 ways, for example, as 32400 + 31250107729 = 180^2 + 176777^2 .

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

It is not a de Polignac number, because 31250140129 - 2¹ = 31250140127 is a prime.

It is a super-2 number, since 2×31250140129² (a number of 22 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 = 31250140097 and 31250140106.

It is not an unprimeable number, because it can be changed into a prime (31250140127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70701454 + ... + 70701895.

It is an arithmetic number, because the mean of its divisors is an integer number (4454205525).

Almost surely, 2^31250140129 is an apocalyptic number.

It is an amenable number.

31250140129 is a deficient number, since it is larger than the sum of its proper divisors (4383504071).

31250140129 is a wasteful number, since it uses less digits than its factorization.

31250140129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141403379.

The product of its (nonzero) digits is 2160, while the sum is 28.

The spelling of 31250140129 in words is "thirty-one billion, two hundred fifty million, one hundred forty thousand, one hundred twenty-nine".