130831858 has 4 divisors (see below), whose sum is σ = 196247790. Its totient is φ = 65415928.

The previous prime is 130831829. The next prime is 130831859. The reversal of 130831858 is 858138031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 858138031 = 271 ⋅3166561.

It can be written as a sum of positive squares in only one way, i.e., 108430569 + 22401289 = 10413^2 + 4733^2 .

It is not an unprimeable number, because it can be changed into a prime (130831859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32707963 + ... + 32707966.

Almost surely, 2^130831858 is an apocalyptic number.

130831858 is a deficient number, since it is larger than the sum of its proper divisors (65415932).

130831858 is an equidigital number, since it uses as much as digits as its factorization.

130831858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65415931.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 130831858 is about 11438.1754663932. The cubic root of 130831858 is about 507.6579242719.

Adding to 130831858 its reverse (858138031), we get a palindrome (988969889).

It can be divided in two parts, 13083 and 1858, that added together give a palindrome (14941).

The spelling of 130831858 in words is "one hundred thirty million, eight hundred thirty-one thousand, eight hundred fifty-eight".