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31422300012 = 2232872841667
BaseRepresentation
bin11101010000111010…
…100011111101101100
310000002212121020012100
4131100322203331230
51003323102100022
622234000535100
72161450100055
oct352072437554
9100085536170
1031422300012
1112365084094
12610b321490
132c69c50b3c
1417412c372c
15c3d9261ac
hex750ea3f6c

31422300012 has 18 divisors (see below), whose sum is σ = 79428591788. Its totient is φ = 10474099992.

The previous prime is 31422299999. The next prime is 31422300029. The reversal of 31422300012 is 21000322413.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 436420798 + ... + 436420869.

Almost surely, 231422300012 is an apocalyptic number.

It is an amenable number.

31422300012 is an abundant number, since it is smaller than the sum of its proper divisors (48006291776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31422300012 is a wasteful number, since it uses less digits than its factorization.

31422300012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872841677 (or 872841672 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 31422300012 its reverse (21000322413), we get a palindrome (52422622425).

The spelling of 31422300012 in words is "thirty-one billion, four hundred twenty-two million, three hundred thousand, twelve".

Divisors: 1 2 3 4 6 9 12 18 36 872841667 1745683334 2618525001 3491366668 5237050002 7855575003 10474100004 15711150006 31422300012