31207148231 has 16 divisors (see below), whose sum is σ = 36829667328. Its totient is φ = 25876368000.

The previous prime is 31207148221. The next prime is 31207148249. The reversal of 31207148231 is 13284170213.

It is not a de Polignac number, because 31207148231 - 2¹⁴ = 31207131847 is a prime.

It is a super-2 number, since 2×31207148231² (a number of 22 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 (31207148221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 582146 + ... + 633488.

It is an arithmetic number, because the mean of its divisors is an integer number (2301854208).

Almost surely, 2^31207148231 is an apocalyptic number.

31207148231 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

31207148231 is a deficient number, since it is larger than the sum of its proper divisors (5622519097).

31207148231 is a wasteful number, since it uses less digits than its factorization.

31207148231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54182.

The product of its (nonzero) digits is 8064, while the sum is 32.

The spelling of 31207148231 in words is "thirty-one billion, two hundred seven million, one hundred forty-eight thousand, two hundred thirty-one".