402333231 has 4 divisors (see below), whose sum is σ = 536444312. Its totient is φ = 268222152.

The previous prime is 402333199. The next prime is 402333233. The reversal of 402333231 is 132333204.

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

It is not a de Polignac number, because 402333231 - 2⁵ = 402333199 is a prime.

It is a super-2 number, since 2×402333231² = 323744057533798722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 402333198 and 402333207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402333233) 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, 67055536 + ... + 67055541.

It is an arithmetic number, because the mean of its divisors is an integer number (134111078).

Almost surely, 2^402333231 is an apocalyptic number.

402333231 is a deficient number, since it is larger than the sum of its proper divisors (134111081).

402333231 is a wasteful number, since it uses less digits than its factorization.

402333231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134111080.

The product of its (nonzero) digits is 1296, while the sum is 21.

The square root of 402333231 is about 20058.2459602030. The cubic root of 402333231 is about 738.2361392826.

Adding to 402333231 its reverse (132333204), we get a palindrome (534666435).

The spelling of 402333231 in words is "four hundred two million, three hundred thirty-three thousand, two hundred thirty-one".