401232287 has 4 divisors (see below), whose sum is σ = 414175296. Its totient is φ = 388289280.

The previous prime is 401232281. The next prime is 401232301. The reversal of 401232287 is 782232104.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401232287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401232281) 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, 6471458 + ... + 6471519.

It is an arithmetic number, because the mean of its divisors is an integer number (103543824).

Almost surely, 2^401232287 is an apocalyptic number.

401232287 is a deficient number, since it is larger than the sum of its proper divisors (12943009).

401232287 is a wasteful number, since it uses less digits than its factorization.

401232287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12943008.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 401232287 is about 20030.7834844272. The cubic root of 401232287 is about 737.5621547539.

The spelling of 401232287 in words is "four hundred one million, two hundred thirty-two thousand, two hundred eighty-seven".