31012235133 has 32 divisors (see below), whose sum is σ = 45618049152. Its totient is φ = 18583584000.

The previous prime is 31012235131. The next prime is 31012235161. The reversal of 31012235133 is 33153221013.

It is not a de Polignac number, because 31012235133 - 2¹ = 31012235131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31012235131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2570391 + ... + 2582427.

It is an arithmetic number, because the mean of its divisors is an integer number (1425564036).

Almost surely, 2^31012235133 is an apocalyptic number.

31012235133 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

31012235133 is a deficient number, since it is larger than the sum of its proper divisors (14605814019).

31012235133 is a wasteful number, since it uses less digits than its factorization.

31012235133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12925.

The product of its (nonzero) digits is 1620, while the sum is 24.

Adding to 31012235133 its reverse (33153221013), we get a palindrome (64165456146).

The spelling of 31012235133 in words is "thirty-one billion, twelve million, two hundred thirty-five thousand, one hundred thirty-three".