31453732440647 has 16 divisors (see below), whose sum is σ = 35353347098112. Its totient is φ = 27738249813120.

The previous prime is 31453732440643. The next prime is 31453732440673. The reversal of 31453732440647 is 74604423735413.

It is not a de Polignac number, because 31453732440647 - 2² = 31453732440643 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 (31453732440643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 269140433 + ... + 269257274.

It is an arithmetic number, because the mean of its divisors is an integer number (2209584193632).

Almost surely, 2^{31453732440647} is an apocalyptic number.

31453732440647 is a deficient number, since it is larger than the sum of its proper divisors (3899614657465).

31453732440647 is a wasteful number, since it uses less digits than its factorization.

31453732440647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538397878.

The product of its (nonzero) digits is 20321280, while the sum is 53.

The spelling of 31453732440647 in words is "thirty-one trillion, four hundred fifty-three billion, seven hundred thirty-two million, four hundred forty thousand, six hundred forty-seven".