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30231412 = 2253142601
BaseRepresentation
bin111001101010…
…0101101110100
32002212220200221
41303110231310
530214401122
62555544124
7514651141
oct163245564
962786627
1030231412
1116079342
12a15b044
136356413
14402d3c8
1529c26c7
hex1cd4b74

30231412 has 12 divisors (see below), whose sum is σ = 53903556. Its totient is φ = 14830400.

The previous prime is 30231403. The next prime is 30231433. The reversal of 30231412 is 21413203.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 26255376 + 3976036 = 5124^2 + 1994^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71089 + ... + 71512.

It is an arithmetic number, because the mean of its divisors is an integer number (4491963).

Almost surely, 230231412 is an apocalyptic number.

It is an amenable number.

30231412 is a deficient number, since it is larger than the sum of its proper divisors (23672144).

30231412 is a wasteful number, since it uses less digits than its factorization.

30231412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142658 (or 142656 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 30231412 is about 5498.3099221488. The cubic root of 30231412 is about 311.5201505017.

Adding to 30231412 its reverse (21413203), we get a palindrome (51644615).

The spelling of 30231412 in words is "thirty million, two hundred thirty-one thousand, four hundred twelve".

Divisors: 1 2 4 53 106 212 142601 285202 570404 7557853 15115706 30231412