2131250403 has 32 divisors (see below), whose sum is σ = 3103027200. Its totient is φ = 1297105920.

The previous prime is 2131250377. The next prime is 2131250411. The reversal of 2131250403 is 3040521312.

It is not a de Polignac number, because 2131250403 - 2¹² = 2131246307 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2131250403.

It is not an unprimeable number, because it can be changed into a prime (2131250603) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 149323 + ... + 162971.

It is an arithmetic number, because the mean of its divisors is an integer number (96969600).

Almost surely, 2^2131250403 is an apocalyptic number.

2131250403 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2131250403 is a deficient number, since it is larger than the sum of its proper divisors (971776797).

2131250403 is a wasteful number, since it uses less digits than its factorization.

2131250403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13779.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 2131250403 is about 46165.4676462830. The cubic root of 2131250403 is about 1286.9000748925.

Adding to 2131250403 its reverse (3040521312), we get a palindrome (5171771715).

The spelling of 2131250403 in words is "two billion, one hundred thirty-one million, two hundred fifty thousand, four hundred three".