31461132 has 12 divisors (see below), whose sum is σ = 73409336. Its totient is φ = 10487040.

The previous prime is 31461127. The next prime is 31461149. The reversal of 31461132 is 23116413.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nude number because it is divisible by every one of its digits.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 31461099 and 31461108.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1310869 + ... + 1310892.

Almost surely, 2^31461132 is an apocalyptic number.

It is an amenable number.

31461132 is an abundant number, since it is smaller than the sum of its proper divisors (41948204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31461132 is a wasteful number, since it uses less digits than its factorization.

31461132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2621768 (or 2621766 counting only the distinct ones).

The product of its digits is 432, while the sum is 21.

The square root of 31461132 is about 5609.0223747102. The cubic root of 31461132 is about 315.6880299831.

Adding to 31461132 its reverse (23116413), we get a palindrome (54577545).

It can be divided in two parts, 3146 and 1132, that added together give a triangular number (4278 = T₉₂).

The spelling of 31461132 in words is "thirty-one million, four hundred sixty-one thousand, one hundred thirty-two".