402020304201031 has 4 divisors (see below), whose sum is σ = 402022879314112. Its totient is φ = 402017729087952.

The previous prime is 402020304201023. The next prime is 402020304201037. The reversal of 402020304201031 is 130102403020204.

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 402020304201031 - 2³ = 402020304201023 is a prime.

It is a super-2 number, since 2×402020304201031² (a number of 30 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 = 402020304200993 and 402020304201011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402020304201037) 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, 1287322350 + ... + 1287634603.

It is an arithmetic number, because the mean of its divisors is an integer number (100505719828528).

Almost surely, 2^{402020304201031} is an apocalyptic number.

402020304201031 is a deficient number, since it is larger than the sum of its proper divisors (2575113081).

402020304201031 is a wasteful number, since it uses less digits than its factorization.

402020304201031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2575113080.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 402020304201031 its reverse (130102403020204), we get a palindrome (532122707221235).

The spelling of 402020304201031 in words is "four hundred two trillion, twenty billion, three hundred four million, two hundred one thousand, thirty-one".