402311402 has 4 divisors (see below), whose sum is σ = 603467106. Its totient is φ = 201155700.

The previous prime is 402311387. The next prime is 402311411. The reversal of 402311402 is 204113204.

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., 325766401 + 76545001 = 18049^2 + 8749^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100577849 + ... + 100577852.

Almost surely, 2^402311402 is an apocalyptic number.

402311402 is a deficient number, since it is larger than the sum of its proper divisors (201155704).

402311402 is a wasteful number, since it uses less digits than its factorization.

402311402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201155703.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 402311402 is about 20057.7018125208. The cubic root of 402311402 is about 738.2227877894. Note that the first 3 decimals are identical.

Adding to 402311402 its reverse (204113204), we get a palindrome (606424606).

The spelling of 402311402 in words is "four hundred two million, three hundred eleven thousand, four hundred two".