263131438948 has 12 divisors (see below), whose sum is σ = 526262877952. Its totient is φ = 112770616680.

The previous prime is 263131438931. The next prime is 263131438949. The reversal of 263131438948 is 849834131362.

It is a happy number.

263131438948 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 263131438895 and 263131438904.

It is not an unprimeable number, because it can be changed into a prime (263131438949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4698775668 + ... + 4698775723.

Almost surely, 2^263131438948 is an apocalyptic number.

263131438948 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

263131438948 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

263131438948 is a wasteful number, since it uses less digits than its factorization.

263131438948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9397551402 (or 9397551400 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 52.

The spelling of 263131438948 in words is "two hundred sixty-three billion, one hundred thirty-one million, four hundred thirty-eight thousand, nine hundred forty-eight".