7131251630 has 32 divisors (see below), whose sum is σ = 13674762144. Its totient is φ = 2668225536.

The previous prime is 7131251593. The next prime is 7131251653. The reversal of 7131251630 is 361521317.

It is a junction number, because it is equal to n+sod(n) for n = 7131251593 and 7131251602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100967 + ... + 156386.

It is an arithmetic number, because the mean of its divisors is an integer number (427336317).

Almost surely, 2^7131251630 is an apocalyptic number.

7131251630 is a deficient number, since it is larger than the sum of its proper divisors (6543510514).

7131251630 is a wasteful number, since it uses less digits than its factorization.

7131251630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257540.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 7131251630 is about 84446.7384213268. The cubic root of 7131251630 is about 1924.8131942187.

Adding to 7131251630 its reverse (361521317), we get a palindrome (7492772947).

The spelling of 7131251630 in words is "seven billion, one hundred thirty-one million, two hundred fifty-one thousand, six hundred thirty".