Search a number
-
+
31023003211301 = 199155894488499
BaseRepresentation
bin1110000110111000110110…
…00101100001011000100101
311001211202210102201101122002
413003130123011201120211
513031240102310230201
6145551434304215045
76351223640251223
oct703343305413045
9131752712641562
1031023003211301
1199808665aa082
12359057100a485
1314405c234c80a
147937428b9b13
1538bea5c8676b
hex1c371b161625

31023003211301 has 4 divisors (see below), whose sum is σ = 31178897700000. Its totient is φ = 30867108722604.

The previous prime is 31023003211283. The next prime is 31023003211391. The reversal of 31023003211301 is 10311230032013.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-31023003211301 is a prime.

It is a super-2 number, since 2×310230032113012 (a number of 28 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 (31023003211391) 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, 77947244051 + ... + 77947244448.

It is an arithmetic number, because the mean of its divisors is an integer number (7794724425000).

Almost surely, 231023003211301 is an apocalyptic number.

It is an amenable number.

31023003211301 is a deficient number, since it is larger than the sum of its proper divisors (155894488699).

31023003211301 is a wasteful number, since it uses less digits than its factorization.

31023003211301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155894488698.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 31023003211301 its reverse (10311230032013), we get a palindrome (41334233243314).

The spelling of 31023003211301 in words is "thirty-one trillion, twenty-three billion, three million, two hundred eleven thousand, three hundred one".

Divisors: 1 199 155894488499 31023003211301