31550343109 has 8 divisors (see below), whose sum is σ = 31637161688. Its totient is φ = 31463562240.

The previous prime is 31550343103. The next prime is 31550343119. The reversal of 31550343109 is 90134305513.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8236107009 + 23314236100 = 90753^2 + 152690^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 31550343109 - 2⁷ = 31550342981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31550343103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2710069 + ... + 2721685.

It is an arithmetic number, because the mean of its divisors is an integer number (3954645211).

Almost surely, 2^31550343109 is an apocalyptic number.

It is an amenable number.

31550343109 is a deficient number, since it is larger than the sum of its proper divisors (86818579).

31550343109 is a wasteful number, since it uses less digits than its factorization.

31550343109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18855.

The product of its (nonzero) digits is 24300, while the sum is 34.

The spelling of 31550343109 in words is "thirty-one billion, five hundred fifty million, three hundred forty-three thousand, one hundred nine".