Search a number
-
+
131003232031 = 7192342825509
BaseRepresentation
bin111101000000001100…
…1101010111100011111
3110112010211200201020201
41322000121222330133
54121243311411111
6140103153524331
712315245046040
oct1720031527437
9415124621221
10131003232031
1150615a00211
12214808736a7
13c4799a3b59
1464aa8188c7
15361ae826c1
hex1e8066af1f

131003232031 has 16 divisors (see below), whose sum is σ = 164449958400. Its totient is φ = 101753407008.

The previous prime is 131003232011. The next prime is 131003232037. The reversal of 131003232031 is 130232300131.

It is a cyclic number.

It is not a de Polignac number, because 131003232031 - 25 = 131003231999 is a prime.

It is a super-2 number, since 2×1310032320312 (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131003232037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21409696 + ... + 21415813.

It is an arithmetic number, because the mean of its divisors is an integer number (10278122400).

Almost surely, 2131003232031 is an apocalyptic number.

131003232031 is a deficient number, since it is larger than the sum of its proper divisors (33446726369).

131003232031 is a wasteful number, since it uses less digits than its factorization.

131003232031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42825558.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 131003232031 its reverse (130232300131), we get a palindrome (261235532162).

The spelling of 131003232031 in words is "one hundred thirty-one billion, three million, two hundred thirty-two thousand, thirty-one".

Divisors: 1 7 19 23 133 161 437 3059 42825509 299778563 813684671 984986707 5695792697 6894906949 18714747433 131003232031