Search a number
-
+
30431853354 = 2373312189027
BaseRepresentation
bin11100010101111000…
…010011101100101010
32220112211220022210210
4130111320103230222
5444311023301404
621551420121550
72125062325350
oct342570235452
986484808723
1030431853354
11119a6a95931
125a936962b6
132b3c9aa126
1416899417d0
15bd19d0689
hex715e13b2a

30431853354 has 32 divisors (see below), whose sum is σ = 69768700416. Its totient is φ = 8668542960.

The previous prime is 30431853341. The next prime is 30431853373. The reversal of 30431853354 is 45335813403.

It is a super-2 number, since 2×304318533542 (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1080612 + ... + 1108415.

It is an arithmetic number, because the mean of its divisors is an integer number (2180271888).

Almost surely, 230431853354 is an apocalyptic number.

30431853354 is an abundant number, since it is smaller than the sum of its proper divisors (39336847062).

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

30431853354 is a wasteful number, since it uses less digits than its factorization.

30431853354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2189370.

The product of its (nonzero) digits is 259200, while the sum is 39.

It can be divided in two parts, 30431 and 853354, that added together give a triangular number (883785 = T1329).

The spelling of 30431853354 in words is "thirty billion, four hundred thirty-one million, eight hundred fifty-three thousand, three hundred fifty-four".

Divisors: 1 2 3 6 7 14 21 42 331 662 993 1986 2317 4634 6951 13902 2189027 4378054 6567081 13134162 15323189 30646378 45969567 91939134 724567937 1449135874 2173703811 4347407622 5071975559 10143951118 15215926677 30431853354