1311006172 has 18 divisors (see below), whose sum is σ = 2668834392. Its totient is φ = 561859704.

The previous prime is 1311006149. The next prime is 1311006173. The reversal of 1311006172 is 2716001131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311006173) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3344208 + ... + 3344599.

Almost surely, 2^1311006172 is an apocalyptic number.

It is an amenable number.

1311006172 is an abundant number, since it is smaller than the sum of its proper divisors (1357828220).

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

1311006172 is a wasteful number, since it uses less digits than its factorization.

1311006172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6688825 (or 6688816 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 1311006172 is about 36207.8192107727. The cubic root of 1311006172 is about 1094.4642464375.

The spelling of 1311006172 in words is "one billion, three hundred eleven million, six thousand, one hundred seventy-two".