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120310101031 = 313880971001
BaseRepresentation
bin111000000001100001…
…0100111010000100111
3102111112121200101010211
41300003002213100213
53432343341213111
6131134131000251
711456252662021
oct1600302472047
9374477611124
10120310101031
1147028a0866a
121b397739087
13b4645109c3
145b745c9011
1531e230c521
hex1c030a7427

120310101031 has 4 divisors (see below), whose sum is σ = 124191072064. Its totient is φ = 116429130000.

The previous prime is 120310101029. The next prime is 120310101059. The reversal of 120310101031 is 130101013021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 120310101031 - 21 = 120310101029 is a prime.

It is a super-2 number, since 2×1203101010312 (a number of 23 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 (120310101631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1940485470 + ... + 1940485531.

It is an arithmetic number, because the mean of its divisors is an integer number (31047768016).

Almost surely, 2120310101031 is an apocalyptic number.

120310101031 is a deficient number, since it is larger than the sum of its proper divisors (3880971033).

120310101031 is an equidigital number, since it uses as much as digits as its factorization.

120310101031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3880971032.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 120310101031 its reverse (130101013021), we get a palindrome (250411114052).

The spelling of 120310101031 in words is "one hundred twenty billion, three hundred ten million, one hundred one thousand, thirty-one".

Divisors: 1 31 3880971001 120310101031