401231522 has 4 divisors (see below), whose sum is σ = 601847286. Its totient is φ = 200615760.

The previous prime is 401231483. The next prime is 401231533. The reversal of 401231522 is 225132104.

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

It can be written as a sum of positive squares in only one way, i.e., 263380441 + 137851081 = 16229^2 + 11741^2 .

It is a junction number, because it is equal to n+sod(n) for n = 401231494 and 401231503.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100307879 + ... + 100307882.

Almost surely, 2^401231522 is an apocalyptic number.

401231522 is a deficient number, since it is larger than the sum of its proper divisors (200615764).

401231522 is a wasteful number, since it uses less digits than its factorization.

401231522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200615763.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 401231522 is about 20030.7643888095. The cubic root of 401231522 is about 737.5616860019.

Adding to 401231522 its reverse (225132104), we get a palindrome (626363626).

The spelling of 401231522 in words is "four hundred one million, two hundred thirty-one thousand, five hundred twenty-two".