402231101 has 4 divisors (see below), whose sum is σ = 425891772. Its totient is φ = 378570432.

The previous prime is 402231077. The next prime is 402231103. The reversal of 402231101 is 101132204.

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

It can be written as a sum of positive squares in 2 ways, for example, as 372528601 + 29702500 = 19301^2 + 5450^2 .

It is a cyclic number.

It is not a de Polignac number, because 402231101 - 2²⁶ = 335122237 is a prime.

It is a super-2 number, since 2×402231101² = 323579717223344402, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402231103) 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, 11830310 + ... + 11830343.

It is an arithmetic number, because the mean of its divisors is an integer number (106472943).

Almost surely, 2^402231101 is an apocalyptic number.

It is an amenable number.

402231101 is a deficient number, since it is larger than the sum of its proper divisors (23660671).

402231101 is a wasteful number, since it uses less digits than its factorization.

402231101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23660670.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 402231101 is about 20055.6999628535. The cubic root of 402231101 is about 738.1736683161.

Adding to 402231101 its reverse (101132204), we get a palindrome (503363305).

The spelling of 402231101 in words is "four hundred two million, two hundred thirty-one thousand, one hundred one".