2231402 has 4 divisors (see below), whose sum is σ = 3347106. Its totient is φ = 1115700.

The previous prime is 2231389. The next prime is 2231407. The reversal of 2231402 is 2041322.

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., 2157961 + 73441 = 1469^2 + 271^2 .

It is a super-3 number, since 3×2231402³ = 33331488510139610424, which contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2231407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557849 + ... + 557852.

2^2231402 is an apocalyptic number.

2231402 is a deficient number, since it is larger than the sum of its proper divisors (1115704).

2231402 is a wasteful number, since it uses less digits than its factorization.

2231402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115703.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 2231402 is about 1493.7878028689. The cubic root of 2231402 is about 130.6750292556.

Adding to 2231402 its reverse (2041322), we get a palindrome (4272724).

The spelling of 2231402 in words is "two million, two hundred thirty-one thousand, four hundred two".