2403631402 has 4 divisors (see below), whose sum is σ = 3605447106. Its totient is φ = 1201815700.

The previous prime is 2403631397. The next prime is 2403631409. The reversal of 2403631402 is 2041363042.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2041363042 = 2 ⋅1020681521.

It can be written as a sum of positive squares in only one way, i.e., 1453820641 + 949810761 = 38129^2 + 30819^2 .

It is not an unprimeable number, because it can be changed into a prime (2403631409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600907849 + ... + 600907852.

Almost surely, 2^2403631402 is an apocalyptic number.

2403631402 is a deficient number, since it is larger than the sum of its proper divisors (1201815704).

2403631402 is a wasteful number, since it uses less digits than its factorization.

2403631402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201815703.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 2403631402 is about 49026.8436879226. The cubic root of 2403631402 is about 1339.5408321340.

Adding to 2403631402 its reverse (2041363042), we get a palindrome (4444994444).

The spelling of 2403631402 in words is "two billion, four hundred three million, six hundred thirty-one thousand, four hundred two".