Search a number
-
+
31670775201 = 3131907425837
BaseRepresentation
bin11101011111101110…
…011010110110100001
310000202012011002002010
4131133232122312201
51004330204301301
622314354343133
72200555101402
oct353756326641
9100665132063
1031670775201
111248236618a
12617a58aaa9
132ca957b490
1417662c39a9
15c556585d6
hex75fb9ada1

31670775201 has 16 divisors (see below), whose sum is σ = 45499938624. Its totient is φ = 19479441984.

The previous prime is 31670775167. The next prime is 31670775317. The reversal of 31670775201 is 10257707613.

It is not a de Polignac number, because 31670775201 - 217 = 31670644129 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 31670775201.

It is not an unprimeable number, because it can be changed into a prime (31670775901) 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, 138546 + ... + 287291.

It is an arithmetic number, because the mean of its divisors is an integer number (2843746164).

Almost surely, 231670775201 is an apocalyptic number.

It is an amenable number.

31670775201 is a deficient number, since it is larger than the sum of its proper divisors (13829163423).

31670775201 is a wasteful number, since it uses less digits than its factorization.

31670775201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427760.

The product of its (nonzero) digits is 61740, while the sum is 39.

The spelling of 31670775201 in words is "thirty-one billion, six hundred seventy million, seven hundred seventy-five thousand, two hundred one".

Divisors: 1 3 13 39 1907 5721 24791 74373 425837 1277511 5535881 16607643 812071159 2436213477 10556925067 31670775201