130531403 has 2 divisors, whose sum is σ = 130531404. Its totient is φ = 130531402.

The previous prime is 130531381. The next prime is 130531409. The reversal of 130531403 is 304135031.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 130531403 - 2¹² = 130527307 is a prime.

It is not a weakly prime, because it can be changed into another prime (130531409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65265701 + 65265702.

It is an arithmetic number, because the mean of its divisors is an integer number (65265702).

Almost surely, 2^130531403 is an apocalyptic number.

130531403 is a deficient number, since it is larger than the sum of its proper divisors (1).

130531403 is an equidigital number, since it uses as much as digits as its factorization.

130531403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 130531403 is about 11425.0340480893. The cubic root of 130531403 is about 507.2690147370.

Adding to 130531403 its reverse (304135031), we get a palindrome (434666434).

The spelling of 130531403 in words is "one hundred thirty million, five hundred thirty-one thousand, four hundred three".