43020040133131 has 4 divisors (see below), whose sum is σ = 44407783363264. Its totient is φ = 41632296903000.

The previous prime is 43020040133089. The next prime is 43020040133143. The reversal of 43020040133131 is 13133104002034.

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 43020040133131 - 2²¹ = 43020038035979 is a prime.

It is a super-2 number, since 2×43020040133131² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43020040133096 and 43020040133105.

It is not an unprimeable number, because it can be changed into a prime (43020040133431) 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, 693871615020 + ... + 693871615081.

It is an arithmetic number, because the mean of its divisors is an integer number (11101945840816).

Almost surely, 2^{43020040133131} is an apocalyptic number.

43020040133131 is a deficient number, since it is larger than the sum of its proper divisors (1387743230133).

43020040133131 is a wasteful number, since it uses less digits than its factorization.

43020040133131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1387743230132.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 43020040133131 its reverse (13133104002034), we get a palindrome (56153144135165).

The spelling of 43020040133131 in words is "forty-three trillion, twenty billion, forty million, one hundred thirty-three thousand, one hundred thirty-one".