1145310131 has 8 divisors (see below), whose sum is σ = 1321159680. Its totient is φ = 972519048.

The previous prime is 1145310109. The next prime is 1145310143. The reversal of 1145310131 is 1310135411.

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-1145310131 is a prime.

It is a super-2 number, since 2×1145310131² = 2623470592342474322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1145310151) 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, 763811 + ... + 765308.

It is an arithmetic number, because the mean of its divisors is an integer number (165144960).

Almost surely, 2^1145310131 is an apocalyptic number.

1145310131 is a deficient number, since it is larger than the sum of its proper divisors (175849549).

1145310131 is a wasteful number, since it uses less digits than its factorization.

1145310131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1529233.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 1145310131 is about 33842.4309262795. The cubic root of 1145310131 is about 1046.2634020723.

Adding to 1145310131 its reverse (1310135411), we get a palindrome (2455445542).

The spelling of 1145310131 in words is "one billion, one hundred forty-five million, three hundred ten thousand, one hundred thirty-one".