131319381770 has 8 divisors (see below), whose sum is σ = 236374887204. Its totient is φ = 52527752704.

The previous prime is 131319381761. The next prime is 131319381779. The reversal of 131319381770 is 77183913131.

It is an interprime number because it is at equal distance from previous prime (131319381761) and next prime (131319381779).

It can be written as a sum of positive squares in 2 ways, for example, as 114568033441 + 16751348329 = 338479^2 + 129427^2 .

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

It is not an unprimeable number, because it can be changed into a prime (131319381779) 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, 6565969079 + ... + 6565969098.

Almost surely, 2^131319381770 is an apocalyptic number.

131319381770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131319381770 is a deficient number, since it is larger than the sum of its proper divisors (105055505434).

131319381770 is a wasteful number, since it uses less digits than its factorization.

131319381770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13131938184.

The product of its (nonzero) digits is 95256, while the sum is 44.

The spelling of 131319381770 in words is "one hundred thirty-one billion, three hundred nineteen million, three hundred eighty-one thousand, seven hundred seventy".