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30434031 = 325363803
BaseRepresentation
bin111010000011…
…0001011101111
32010021012122100
41310012023233
530242342111
63004150143
7516453645
oct164061357
963235570
1030434031
11161a75a1
12a238353
1363c7704
144083195
152a12756
hex1d062ef

30434031 has 12 divisors (see below), whose sum is σ = 44790408. Its totient is φ = 19906224.

The previous prime is 30434011. The next prime is 30434057. The reversal of 30434031 is 13043403.

It is not a de Polignac number, because 30434031 - 215 = 30401263 is a prime.

It is a super-2 number, since 2×304340312 = 1852460485817922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30433995 and 30434013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30434011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31425 + ... + 32378.

It is an arithmetic number, because the mean of its divisors is an integer number (3732534).

Almost surely, 230434031 is an apocalyptic number.

30434031 is a deficient number, since it is larger than the sum of its proper divisors (14356377).

30434031 is a wasteful number, since it uses less digits than its factorization.

30434031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63862 (or 63859 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 30434031 is about 5516.7047229302. The cubic root of 30434031 is about 312.2145651790.

Adding to 30434031 its reverse (13043403), we get a palindrome (43477434).

The spelling of 30434031 in words is "thirty million, four hundred thirty-four thousand, thirty-one".

Divisors: 1 3 9 53 159 477 63803 191409 574227 3381559 10144677 30434031