1260156131 has 8 divisors (see below), whose sum is σ = 1416095520. Its totient is φ = 1112645952.

The previous prime is 1260156119. The next prime is 1260156187. The reversal of 1260156131 is 1316510621.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1260156131 is a prime.

It is a super-2 number, since 2×1260156131² = 3175986948993778322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1260156131.

It is not an unprimeable number, because it can be changed into a prime (1260156031) 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, 2106986 + ... + 2107583.

It is an arithmetic number, because the mean of its divisors is an integer number (177011940).

Almost surely, 2^1260156131 is an apocalyptic number.

1260156131 is a deficient number, since it is larger than the sum of its proper divisors (155939389).

1260156131 is a wasteful number, since it uses less digits than its factorization.

1260156131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4214605.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 1260156131 is about 35498.6778767886. The cubic root of 1260156131 is about 1080.1269086692.

Adding to 1260156131 its reverse (1316510621), we get a palindrome (2576666752).

The spelling of 1260156131 in words is "one billion, two hundred sixty million, one hundred fifty-six thousand, one hundred thirty-one".