130215031 has 4 divisors (see below), whose sum is σ = 131557552. Its totient is φ = 128872512.

The previous prime is 130215023. The next prime is 130215049. The reversal of 130215031 is 130512031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130512031 = 13 ⋅10039387.

It is a cyclic number.

It is not a de Polignac number, because 130215031 - 2³ = 130215023 is a prime.

It is a super-2 number, since 2×130215031² = 33911908596661922, 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 = 130214996 and 130215014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130215431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 671115 + ... + 671308.

It is an arithmetic number, because the mean of its divisors is an integer number (32889388).

Almost surely, 2^130215031 is an apocalyptic number.

130215031 is a deficient number, since it is larger than the sum of its proper divisors (1342521).

130215031 is an equidigital number, since it uses as much as digits as its factorization.

130215031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1342520.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 130215031 is about 11411.1800879664. The cubic root of 130215031 is about 506.8588566152.

Adding to 130215031 its reverse (130512031), we get a palindrome (260727062).

The spelling of 130215031 in words is "one hundred thirty million, two hundred fifteen thousand, thirty-one".