313121132041202 has 4 divisors (see below), whose sum is σ = 469681698061806. Its totient is φ = 156560566020600.

The previous prime is 313121132041189. The next prime is 313121132041217. The reversal of 313121132041202 is 202140231121313.

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., 312937904382601 + 183227658601 = 17690051^2 + 428051^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78280283010299 + ... + 78280283010302.

Almost surely, 2^{313121132041202} is an apocalyptic number.

313121132041202 is a deficient number, since it is larger than the sum of its proper divisors (156560566020604).

313121132041202 is a wasteful number, since it uses less digits than its factorization.

313121132041202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156560566020603.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 313121132041202 its reverse (202140231121313), we get a palindrome (515261363162515).

The spelling of 313121132041202 in words is "three hundred thirteen trillion, one hundred twenty-one billion, one hundred thirty-two million, forty-one thousand, two hundred two".