1263145015231 has 4 divisors (see below), whose sum is σ = 1377976380264. Its totient is φ = 1148313650200.

The previous prime is 1263145015193. The next prime is 1263145015243. The reversal of 1263145015231 is 1325105413621.

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 1263145015231 - 2⁷ = 1263145015103 is a prime.

It is a super-2 number, since 2×1263145015231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1263145015261) 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, 57415682500 + ... + 57415682521.

It is an arithmetic number, because the mean of its divisors is an integer number (344494095066).

Almost surely, 2^{1263145015231} is an apocalyptic number.

1263145015231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1263145015231 is a deficient number, since it is larger than the sum of its proper divisors (114831365033).

1263145015231 is a wasteful number, since it uses less digits than its factorization.

1263145015231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114831365032.

The product of its (nonzero) digits is 21600, while the sum is 34.

The spelling of 1263145015231 in words is "one trillion, two hundred sixty-three billion, one hundred forty-five million, fifteen thousand, two hundred thirty-one".