263131438951 has 2 divisors, whose sum is σ = 263131438952. Its totient is φ = 263131438950.

The previous prime is 263131438949. The next prime is 263131439017. The reversal of 263131438951 is 159834131362.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 263131438951 - 2¹ = 263131438949 is a prime.

Together with 263131438949, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263131438901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131565719475 + 131565719476.

It is an arithmetic number, because the mean of its divisors is an integer number (131565719476).

Almost surely, 2^263131438951 is an apocalyptic number.

263131438951 is a deficient number, since it is larger than the sum of its proper divisors (1).

263131438951 is an equidigital number, since it uses as much as digits as its factorization.

263131438951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 46.

The spelling of 263131438951 in words is "two hundred sixty-three billion, one hundred thirty-one million, four hundred thirty-eight thousand, nine hundred fifty-one".