31402430320051 has 12 divisors (see below), whose sum is σ = 38451955495080. Its totient is φ = 25499717853120.

The previous prime is 31402430319989. The next prime is 31402430320081. The reversal of 31402430320051 is 15002303420413.

It is a happy number.

It is not a de Polignac number, because 31402430320051 - 2⁹ = 31402430319539 is a prime.

It is a super-2 number, since 2×31402430320051² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31402430320081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16864891830 + ... + 16864893691.

It is an arithmetic number, because the mean of its divisors is an integer number (3204329624590).

Almost surely, 2^{31402430320051} is an apocalyptic number.

31402430320051 is a deficient number, since it is larger than the sum of its proper divisors (7049525175029).

31402430320051 is a wasteful number, since it uses less digits than its factorization.

31402430320051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33729785554 (or 33729785547 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 31402430320051 its reverse (15002303420413), we get a palindrome (46404733740464).

The spelling of 31402430320051 in words is "thirty-one trillion, four hundred two billion, four hundred thirty million, three hundred twenty thousand, fifty-one".