2231401551 has 8 divisors (see below), whose sum is σ = 2975481600. Its totient is φ = 1487461272.

The previous prime is 2231401541. The next prime is 2231401559. The reversal of 2231401551 is 1551041322.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2231401551 - 2⁷ = 2231401423 is a prime.

It is a super-3 number, since 3×2231401551³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231401559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10906 + ... + 67688.

It is an arithmetic number, because the mean of its divisors is an integer number (371935200).

Almost surely, 2^2231401551 is an apocalyptic number.

2231401551 is a deficient number, since it is larger than the sum of its proper divisors (744080049).

2231401551 is a wasteful number, since it uses less digits than its factorization.

2231401551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69885.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 2231401551 is about 47237.7132278860. The cubic root of 2231401551 is about 1306.7502049086.

Adding to 2231401551 its reverse (1551041322), we get a palindrome (3782442873).

The spelling of 2231401551 in words is "two billion, two hundred thirty-one million, four hundred one thousand, five hundred fifty-one".