31305748845 has 64 divisors (see below), whose sum is σ = 60282224640. Its totient is φ = 13563272448.

The previous prime is 31305748819. The next prime is 31305748847. The reversal of 31305748845 is 54884750313.

It is not a de Polignac number, because 31305748845 - 2⁵ = 31305748813 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31305748794 and 31305748803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31305748847) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 203772 + ... + 322698.

It is an arithmetic number, because the mean of its divisors is an integer number (941909760).

Almost surely, 2^31305748845 is an apocalyptic number.

31305748845 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

31305748845 is a deficient number, since it is larger than the sum of its proper divisors (28976475795).

31305748845 is a wasteful number, since it uses less digits than its factorization.

31305748845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119074.

The product of its (nonzero) digits is 1612800, while the sum is 48.

The spelling of 31305748845 in words is "thirty-one billion, three hundred five million, seven hundred forty-eight thousand, eight hundred forty-five".