Search a number
-
+
30553637231 = 133175815477
BaseRepresentation
bin11100011101001000…
…111000000101101111
32220212100001120212202
4130131020320011233
51000033212342411
622011450252115
72131101426365
oct343510700557
986770046782
1030553637231
1111a59805967
125b0842703b
132b5bca9cb0
14169bba3635
15bdc53983b
hex71d23816f

30553637231 has 8 divisors (see below), whose sum is σ = 33965334144. Its totient is φ = 27293571360.

The previous prime is 30553637227. The next prime is 30553637237. The reversal of 30553637231 is 13273635503.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30553637231 - 22 = 30553637227 is a prime.

It is a super-2 number, since 2×305536372312 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30553637237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37907336 + ... + 37908141.

It is an arithmetic number, because the mean of its divisors is an integer number (4245666768).

Almost surely, 230553637231 is an apocalyptic number.

30553637231 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

30553637231 is a deficient number, since it is larger than the sum of its proper divisors (3411696913).

30553637231 is a wasteful number, since it uses less digits than its factorization.

30553637231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75815521.

The product of its (nonzero) digits is 170100, while the sum is 38.

The spelling of 30553637231 in words is "thirty billion, five hundred fifty-three million, six hundred thirty-seven thousand, two hundred thirty-one".

Divisors: 1 13 31 403 75815477 985601201 2350279787 30553637231