11312203251 has 16 divisors (see below), whose sum is σ = 15515784864. Its totient is φ = 7325708544.

The previous prime is 11312203247. The next prime is 11312203267. The reversal of 11312203251 is 15230221311.

It is not a de Polignac number, because 11312203251 - 2² = 11312203247 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11312203271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14100 + ... + 151073.

It is an arithmetic number, because the mean of its divisors is an integer number (969736554).

Almost surely, 2^11312203251 is an apocalyptic number.

11312203251 is a deficient number, since it is larger than the sum of its proper divisors (4203581613).

11312203251 is a wasteful number, since it uses less digits than its factorization.

11312203251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165830.

The product of its (nonzero) digits is 360, while the sum is 21.

Adding to 11312203251 its reverse (15230221311), we get a palindrome (26542424562).

The spelling of 11312203251 in words is "eleven billion, three hundred twelve million, two hundred three thousand, two hundred fifty-one".