263115131 has 4 divisors (see below), whose sum is σ = 263175264. Its totient is φ = 263055000.

The previous prime is 263115121. The next prime is 263115133. The reversal of 263115131 is 131511362.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 263115131 - 2⁶ = 263115067 is a prime.

It is a super-2 number, since 2×263115131² = 138459144322294322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 263115097 and 263115106.

It is not an unprimeable number, because it can be changed into a prime (263115133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22940 + ... + 32441.

It is an arithmetic number, because the mean of its divisors is an integer number (65793816).

Almost surely, 2^263115131 is an apocalyptic number.

263115131 is a deficient number, since it is larger than the sum of its proper divisors (60133).

263115131 is an equidigital number, since it uses as much as digits as its factorization.

263115131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60132.

The product of its digits is 540, while the sum is 23.

The square root of 263115131 is about 16220.8239926337. The cubic root of 263115131 is about 640.7893345167.

Adding to 263115131 its reverse (131511362), we get a palindrome (394626493).

The spelling of 263115131 in words is "two hundred sixty-three million, one hundred fifteen thousand, one hundred thirty-one".