202313213240 has 64 divisors (see below), whose sum is σ = 461828908800. Its totient is φ = 79749522432.

The previous prime is 202313213237. The next prime is 202313213243. The reversal of 202313213240 is 42312313202.

It is an interprime number because it is at equal distance from previous prime (202313213237) and next prime (202313213243).

It is a super-2 number, since 2×202313213240² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202313213243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3513401 + ... + 3570519.

It is an arithmetic number, because the mean of its divisors is an integer number (7216076700).

Almost surely, 2^202313213240 is an apocalyptic number.

202313213240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 202313213240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (230914454400).

202313213240 is an abundant number, since it is smaller than the sum of its proper divisors (259515695560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

202313213240 is a wasteful number, since it uses less digits than its factorization.

202313213240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58416 (or 58412 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 202313213240 its reverse (42312313202), we get a palindrome (244625526442).

The spelling of 202313213240 in words is "two hundred two billion, three hundred thirteen million, two hundred thirteen thousand, two hundred forty".