251303111311312 has 10 divisors (see below), whose sum is σ = 486899778165698. Its totient is φ = 125651555655648.

The previous prime is 251303111311289. The next prime is 251303111311337. The reversal of 251303111311312 is 213113111303152.

251303111311312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 247850739212176 + 3452372099136 = 15743276^2 + 1858056^2 .

It is a super-2 number, since 2×251303111311312² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7853222228463 + ... + 7853222228494.

Almost surely, 2^{251303111311312} is an apocalyptic number.

It is an amenable number.

251303111311312 is a deficient number, since it is larger than the sum of its proper divisors (235596666854386).

251303111311312 is a wasteful number, since it uses less digits than its factorization.

251303111311312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15706444456965 (or 15706444456959 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 28.

Adding to 251303111311312 its reverse (213113111303152), we get a palindrome (464416222614464).

The spelling of 251303111311312 in words is "two hundred fifty-one trillion, three hundred three billion, one hundred eleven million, three hundred eleven thousand, three hundred twelve".