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31002025043 = 1121014875209
BaseRepresentation
bin11100110111110111…
…010101110001010011
32222000120210001022202
4130313313111301103
51001443004300133
622124144553415
72145154602443
oct346767256123
988016701282
1031002025043
1112169920300
12601262286b
132c00b60c22
141701562123
15c16aaa2e8
hex737dd5c53

31002025043 has 24 divisors (see below), whose sum is σ = 34491283680. Its totient is φ = 27841968000.

The previous prime is 31002025037. The next prime is 31002025069. The reversal of 31002025043 is 34052020013.

It is a happy number.

It is not a de Polignac number, because 31002025043 - 214 = 31002008659 is a prime.

It is a super-2 number, since 2×310020250432 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31002025543) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5949023 + ... + 5954231.

It is an arithmetic number, because the mean of its divisors is an integer number (1437136820).

Almost surely, 231002025043 is an apocalyptic number.

31002025043 is a deficient number, since it is larger than the sum of its proper divisors (3489258637).

31002025043 is a wasteful number, since it uses less digits than its factorization.

31002025043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5819 (or 5808 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

Adding to 31002025043 its reverse (34052020013), we get a palindrome (65054045056).

The spelling of 31002025043 in words is "thirty-one billion, two million, twenty-five thousand, forty-three".

Divisors: 1 11 101 121 487 1111 5209 5357 12221 49187 57299 58927 526109 541057 630289 2536783 5787199 5951627 27904613 63659189 256215083 306950743 2818365913 31002025043