2287151231 has 4 divisors (see below), whose sum is σ = 2287296000. Its totient is φ = 2287006464.

The previous prime is 2287151227. The next prime is 2287151267. The reversal of 2287151231 is 1321517822.

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 2287151231 - 2² = 2287151227 is a prime.

It is a super-2 number, since 2×2287151231² = 10462121506929630722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2287151291) 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, 45311 + ... + 81408.

It is an arithmetic number, because the mean of its divisors is an integer number (571824000).

Almost surely, 2^2287151231 is an apocalyptic number.

2287151231 is a deficient number, since it is larger than the sum of its proper divisors (144769).

2287151231 is a wasteful number, since it uses less digits than its factorization.

2287151231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144768.

The product of its digits is 6720, while the sum is 32.

The square root of 2287151231 is about 47824.1699457502. The cubic root of 2287151231 is about 1317.5434935539.

The spelling of 2287151231 in words is "two billion, two hundred eighty-seven million, one hundred fifty-one thousand, two hundred thirty-one".