263131438930 has 16 divisors (see below), whose sum is σ = 475067522304. Its totient is φ = 104934590640.

The previous prime is 263131438901. The next prime is 263131438931. The reversal of 263131438930 is 39834131362.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (263131438931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39744642 + ... + 39751261.

It is an arithmetic number, because the mean of its divisors is an integer number (29691720144).

Almost surely, 2^263131438930 is an apocalyptic number.

263131438930 is a deficient number, since it is larger than the sum of its proper divisors (211936083374).

263131438930 is a wasteful number, since it uses less digits than its factorization.

263131438930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79496241.

The product of its (nonzero) digits is 279936, while the sum is 43.

The spelling of 263131438930 in words is "two hundred sixty-three billion, one hundred thirty-one million, four hundred thirty-eight thousand, nine hundred thirty".