1311631150106 has 4 divisors (see below), whose sum is σ = 1967446725162. Its totient is φ = 655815575052.

The previous prime is 1311631150087. The next prime is 1311631150127. The reversal of 1311631150106 is 6010511361131.

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., 1044502396081 + 267128754025 = 1022009^2 + 516845^2 .

It is a super-2 number, since 2×1311631150106² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327907787525 + ... + 327907787528.

Almost surely, 2^{1311631150106} is an apocalyptic number.

1311631150106 is a deficient number, since it is larger than the sum of its proper divisors (655815575056).

1311631150106 is an equidigital number, since it uses as much as digits as its factorization.

1311631150106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655815575055.

The product of its (nonzero) digits is 1620, while the sum is 29.

The spelling of 1311631150106 in words is "one trillion, three hundred eleven billion, six hundred thirty-one million, one hundred fifty thousand, one hundred six".