31422142551 has 16 divisors (see below), whose sum is σ = 42648386400. Its totient is φ = 20573051520.

The previous prime is 31422142541. The next prime is 31422142567. The reversal of 31422142551 is 15524122413.

It is not a de Polignac number, because 31422142551 - 2²¹ = 31420045399 is a prime.

It is a super-3 number, since 3×31422142551³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31422142511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11976 + ... + 250973.

It is an arithmetic number, because the mean of its divisors is an integer number (2665524150).

Almost surely, 2^31422142551 is an apocalyptic number.

31422142551 is a deficient number, since it is larger than the sum of its proper divisors (11226243849).

31422142551 is a wasteful number, since it uses less digits than its factorization.

31422142551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263666.

The product of its digits is 9600, while the sum is 30.

Adding to 31422142551 its reverse (15524122413), we get a palindrome (46946264964).

The spelling of 31422142551 in words is "thirty-one billion, four hundred twenty-two million, one hundred forty-two thousand, five hundred fifty-one".