20313502 has 8 divisors (see below), whose sum is σ = 33240312. Its totient is φ = 9233400.

The previous prime is 20313493. The next prime is 20313509. The reversal of 20313502 is 20531302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20313509) 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, 461649 + ... + 461692.

It is an arithmetic number, because the mean of its divisors is an integer number (4155039).

Almost surely, 2^20313502 is an apocalyptic number.

20313502 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20313502 is a deficient number, since it is larger than the sum of its proper divisors (12926810).

20313502 is a wasteful number, since it uses less digits than its factorization.

20313502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923354.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 20313502 is about 4507.0502548785. The cubic root of 20313502 is about 272.8527071558.

Adding to 20313502 its reverse (20531302), we get a palindrome (40844804).

The spelling of 20313502 in words is "twenty million, three hundred thirteen thousand, five hundred two".