31601486287445 has 64 divisors (see below), whose sum is σ = 42670853265600. Its totient is φ = 22346807132160.

The previous prime is 31601486287417. The next prime is 31601486287447. The reversal of 31601486287445 is 54478268410613.

It can be written as a sum of positive squares in 32 ways, for example, as 6187163734801 + 25414322552644 = 2487401^2 + 5041262^2 .

It is not a de Polignac number, because 31601486287445 - 2¹² = 31601486283349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31601486287447) 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, 363773315 + ... + 363860175.

It is an arithmetic number, because the mean of its divisors is an integer number (666732082275).

Almost surely, 2^{31601486287445} is an apocalyptic number.

It is an amenable number.

31601486287445 is a deficient number, since it is larger than the sum of its proper divisors (11069366978155).

31601486287445 is a wasteful number, since it uses less digits than its factorization.

31601486287445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90938.

The product of its (nonzero) digits is 30965760, while the sum is 59.

The spelling of 31601486287445 in words is "thirty-one trillion, six hundred one billion, four hundred eighty-six million, two hundred eighty-seven thousand, four hundred forty-five".