130242731 has 8 divisors (see below), whose sum is σ = 132303120. Its totient is φ = 128189952.

The previous prime is 130242653. The next prime is 130242733. The reversal of 130242731 is 137242031.

130242731 = T₃₇₉ + T₃₈₀ + ... + T₉₄₁.

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-130242731 is a prime.

It is a super-2 number, since 2×130242731² = 33926337956676722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130242697 and 130242706.

It is not an unprimeable number, because it can be changed into a prime (130242733) 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, 39515 + ... + 42683.

It is an arithmetic number, because the mean of its divisors is an integer number (16537890).

Almost surely, 2^130242731 is an apocalyptic number.

130242731 is a deficient number, since it is larger than the sum of its proper divisors (2060389).

130242731 is an equidigital number, since it uses as much as digits as its factorization.

130242731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3805.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 130242731 is about 11412.3937453980. The cubic root of 130242731 is about 506.8947945936.

Adding to 130242731 its reverse (137242031), we get a palindrome (267484762).

The spelling of 130242731 in words is "one hundred thirty million, two hundred forty-two thousand, seven hundred thirty-one".