200420312340 has 48 divisors (see below), whose sum is σ = 561202996032. Its totient is φ = 53442928896.

The previous prime is 200420312327. The next prime is 200420312353. The reversal of 200420312340 is 43213024002.

It is an interprime number because it is at equal distance from previous prime (200420312327) and next prime (200420312353).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1479952 + ... + 1609688.

It is an arithmetic number, because the mean of its divisors is an integer number (11691729084).

Almost surely, 2^200420312340 is an apocalyptic number.

200420312340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200420312340 is an abundant number, since it is smaller than the sum of its proper divisors (360782683692).

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

200420312340 is a wasteful number, since it uses less digits than its factorization.

200420312340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155496 (or 155494 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 200420312340 its reverse (43213024002), we get a palindrome (243633336342).

The spelling of 200420312340 in words is "two hundred billion, four hundred twenty million, three hundred twelve thousand, three hundred forty".