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31242010153 = 672931591463
BaseRepresentation
bin11101000110001010…
…110011111000101001
32222122022100120000011
4131012022303320221
51002440423311103
622204040411521
72154130463464
oct350612637051
988568316004
1031242010153
1112282333702
12607aa76ba1
132c3b7a8053
1417253922db
15c2cbb1d6d
hex7462b3e29

31242010153 has 8 divisors (see below), whose sum is σ = 31816548288. Its totient is φ = 30670655664.

The previous prime is 31242010147. The next prime is 31242010159. The reversal of 31242010153 is 35101024213.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (31242010147) and next prime (31242010159).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-31242010153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31242010159) 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, 776101 + ... + 815362.

It is an arithmetic number, because the mean of its divisors is an integer number (3977068536).

Almost surely, 231242010153 is an apocalyptic number.

It is an amenable number.

31242010153 is a deficient number, since it is larger than the sum of its proper divisors (574538135).

31242010153 is a wasteful number, since it uses less digits than its factorization.

31242010153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1591823.

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 31242010153 its reverse (35101024213), we get a palindrome (66343034366).

The spelling of 31242010153 in words is "thirty-one billion, two hundred forty-two million, ten thousand, one hundred fifty-three".

Divisors: 1 67 293 19631 1591463 106628021 466298659 31242010153